Upload
doberman-pinscher
View
275
Download
3
Embed Size (px)
Citation preview
7/28/2019 Osnove JAVA Programiranja Zbirka
1/318
7/28/2019 Osnove JAVA Programiranja Zbirka
2/318
500
978-86-7912-190-5
7/28/2019 Osnove JAVA Programiranja Zbirka
3/318
7/28/2019 Osnove JAVA Programiranja Zbirka
4/318
7/28/2019 Osnove JAVA Programiranja Zbirka
5/318
7/28/2019 Osnove JAVA Programiranja Zbirka
6/318
7/28/2019 Osnove JAVA Programiranja Zbirka
7/318
7/28/2019 Osnove JAVA Programiranja Zbirka
8/318
7/28/2019 Osnove JAVA Programiranja Zbirka
9/318
H
K
7/28/2019 Osnove JAVA Programiranja Zbirka
10/318
7/28/2019 Osnove JAVA Programiranja Zbirka
11/318
7/28/2019 Osnove JAVA Programiranja Zbirka
12/318
7/28/2019 Osnove JAVA Programiranja Zbirka
13/318
1
H
H
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
14/318
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
15/318
H
H
Test
public class Test {
. . .
public static void main(String[] args) {
. . .
}}
H Test.txt
H Test.class
H Test.java
H Main.java
H Main.txt
H .java
H .obj
H .class
H .exe
Test.java
H javac Test.javaH compile Test.java
H prevedi Test.java
H javap Test.java
Test.class
7/28/2019 Osnove JAVA Programiranja Zbirka
16/318
H javac Test
H izvrsi Test
H java Test
H java Test.class
K
K
K
K
K
7/28/2019 Osnove JAVA Programiranja Zbirka
17/318
2
H
H
H
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
18/318
H
H
H
H
H
H
H
H
H import
H export
H moduleH package
K
K package
K
import
K java.lang
K /** tekst komentara */
K // tekst komentara
K -- tekst komentara
K /* tekst komentara */
K ** tekst komentara **
7/28/2019 Osnove JAVA Programiranja Zbirka
19/318
K
K
K
K
K
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
20/318
7/28/2019 Osnove JAVA Programiranja Zbirka
21/318
3
K public
Kstatic
K void
K class
K tacno
K 9x
K ekran
K brojStudenataK znak+ili-
K 3praseta
K tri praseta
7/28/2019 Osnove JAVA Programiranja Zbirka
22/318
K precnik
K bzvz
H
H
H
H
H long
H int
H short
H byte
K float
K int
K long
K double
K boolean
char
H
H
H
H
boolean
K tacno
7/28/2019 Osnove JAVA Programiranja Zbirka
23/318
K true
K false
K 0
K 1
K netacno
Kkredit
K Kredit
K KREDIT
K kamatnaStopa
K KamatnaStopa
K kamatna_stopa
K int duina; int irina;K int duina, irina;
K int duina; irina;
K int duina, int irina;
Java je kul!
K System.out.println(Java je kul!);
K System.println("Java je kul!");
K System.out.writeln("Java je kul!");K System.out.println("Java je kul!");
K System.out.print("Java je kul!");
K System.out.printf("Java je kul!");
x
7/28/2019 Osnove JAVA Programiranja Zbirka
24/318
7/28/2019 Osnove JAVA Programiranja Zbirka
25/318
a
b
int
K a / b * b
K a / (b * b)
K 1.0 * a / b * b
K 1.0 * a / (b * b)
K (double) a / (b * b)
K float f = -34;
K int t = 23;
K short s = 10;
K int t = (int)false;
K int t = 4.5;
double x = 5.5;
int y = (int)x;
System.out.println("x je " + x + " i y je " + y);
H x j e 5 i y je 6
H x je 6.0 i y je 6.0
H x j e 6 i y je 6
H x je 5.5 i y je 5
H x je 5.5 i y je 5.0
i
int
K i = i + (2 - 1);
K i = i + 1 ;
K i += 1;
7/28/2019 Osnove JAVA Programiranja Zbirka
26/318
7/28/2019 Osnove JAVA Programiranja Zbirka
27/318
K string s = A;
K String s = 23;
K String s = "A";
K String s = "23";
c
String s = "Java";char c = s.charAt(4);
H a
H v
H
s1 s2 String
K String s = "neki string";
K String s3 = s1 + s2;
K s1 >= s2
K int i = s1.length;
K s1.charAt(0) = ?;
s1 s2 String
K String s3 = s1 - s2;
K s1 == s2K boolean b = s1.compareTo(s2);
K char c = s1[0];
K char c = s1.charAt(s1.length());
K char c = s1.charAt(s1.length() - 1);
s1
s2
String
7/28/2019 Osnove JAVA Programiranja Zbirka
28/318
7/28/2019 Osnove JAVA Programiranja Zbirka
29/318
K s = (new Double(d)).toString();
K s = (Double.valueOf(d)).toString();
H 0)
K (x > 0) || (x < 0)
K (x != 0) || (x = 0)
K (-10 < x < 0)
true
x
x
H 1 < x < 1 0 0 & & x < 0
H ((x < 100) && (x > 1)) || (x < 0)
H ((x < 100) && (x > 1)) && (x < 0)
H (x != 0) || (x = 0)
H (1 > x > 100) || (x < 0)
H (1 < x < 100) || (x < 0)
7/28/2019 Osnove JAVA Programiranja Zbirka
30/318
x
(y > 10) && (x++ > 10)
H
H
H
H
x
(y > 10) || (x++ > 10)
H
H
H
H
y
x = 0 ;
y = (x > 0) ? 10 : -10;
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
31/318
7/28/2019 Osnove JAVA Programiranja Zbirka
32/318
int
7/28/2019 Osnove JAVA Programiranja Zbirka
33/318
4
r
K if (r != 0) System.out.println(r*
r*
Math.PI);
K if (r >= 0) System.out.println(r * r * Math.PI);
K if (r > 0) System.out.println(r * r * Math.PI);
K if (r > 0) { System.out.println(r * r * Math.PI); }
K if {r > 0} System.out.println(r * r * PI);
K if (r 0) System.out.println(Math.pow(r, 2) * Math.PI);
if
else
if (x > 0)
if (y > 0)
System.out.println("x > 0 i y > 0");
else if (z > 0)
System.out.println("x < 0 i z > 0");
H x > 0 i y > 0
7/28/2019 Osnove JAVA Programiranja Zbirka
34/318
7/28/2019 Osnove JAVA Programiranja Zbirka
35/318
7/28/2019 Osnove JAVA Programiranja Zbirka
36/318
7/28/2019 Osnove JAVA Programiranja Zbirka
37/318
public class Test {
public static void main(String[] args) {
String s1 = "Java";
String s2 = "Java";
if (s1.equals(s2))
System.out.println("s1 i s2 imaju isti sadraj");
else
System.out.println("s1 i s2 imaju razlicit sadraj");
}
}
H
H s1 i s2 imaju isti sadraj
H s1 i s2 imaju razlicit sadraj
public class Test {
public static void main(String[] args) {
String s1 = "Java";
String s2 = s1.toUpperCase();
if (s1 == s2)
System.out.println("s1 i s2 ukazuju na isti string");
else if (s1.equals(s2))
System.out.println("s1 i s2 imaju isti sadraj");
else
System.out.println("s1 i s2 imaju razlicit sadraj");
}
}
H
H s1 i s2 ukazuju na isti string
H s1 i s2 imaju isti sadrajH s1 i s2 imaju razlicit sadraj
y
int x = 3, y = 3 ;
switch (x + 3) {
7/28/2019 Osnove JAVA Programiranja Zbirka
38/318
case 6: y = 0;
case 7: y = 1;
default: y = y + 1 ;
}
H
H
H
H
char ch = a;
switch (ch) {
case a:
case A:
System.out.print(ch); break;
case b:
case B:
System.out.print(ch); break;
case c:
case C:System.out.print(ch); break;
case d:
case D:
System.out.print(ch);
}
H abcd
H a
H aA
H A
int ocena = 15;
switch (ocena) {
case 0 :
System.out.println("ocena je 0");
break;
7/28/2019 Osnove JAVA Programiranja Zbirka
39/318
7/28/2019 Osnove JAVA Programiranja Zbirka
40/318
H
H 20
H
H
20
Kako ste?
int brojac = 0 ;
while (brojac < 10) {
System.out.println("Kako ste?");
brojac++;
}
H
H
H
H
int brojac = 0 ;
// Tacka A
while (brojac < 10) {
System.out.println("Kako ste?");
brojac++;
// Tacka B
}
// Tacka C
K brojac < 1 0
K brojac < 1 0
K brojac < 1 0
K brojac < 1 0
K brojac < 1 0
K
brojac < 1 0
Kako ste?
7/28/2019 Osnove JAVA Programiranja Zbirka
41/318
7/28/2019 Osnove JAVA Programiranja Zbirka
42/318
int suma = 0;
for (int i = 0; i < 10; i++) {
suma = suma + i;
}
System.out.println(suma);
H 10
H 11
H 12
H 13
H 45
for
suma
for (int i = 0; i < 10; ++i) {
suma = suma + i;
}
for (int i = 0; i < 10; i++) {
suma = suma + i;
}
H
H
for
for ( ; ; ) ;
H
H
public class Test {
public static void main (String args[]) {
int i = 0;
for (i = 0; i < 10; i++);
System.out.println(i + 4);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
43/318
K
for
K
4
K
14
K
for
for
for (i = 0; i < 10; i++) { };
int stanje = 10;
while (true) {
if (stanje < 9) break;
stanje = stanje - 9;
}
H
H
suma
int suma = 0;int i = 0 ;
do {
i++;
suma = suma + i;
if (suma > 4) break;
} while (i < 5);
H 5
H 6
H 7
H8
int stanje = 10;
while (true) {
if (stanje < 9) continue;
stanje = stanje - 9;
}
7/28/2019 Osnove JAVA Programiranja Zbirka
44/318
7/28/2019 Osnove JAVA Programiranja Zbirka
45/318
spetlja:
for (int i = 1; i < 10; i++) {
upetlja:
for (int j = 1; j < 10; j++) {
if (i * j > 50)
continue spetlja;
System.out.println(i * j);
// Tacka A
}
// Tacka B
}
nastavak:
. . .
H
spetlja
H
upetlja
H nastavak
H
7/28/2019 Osnove JAVA Programiranja Zbirka
46/318
7/28/2019 Osnove JAVA Programiranja Zbirka
47/318
*
***
************
*********
***********
*********
*******
*****
***
*
7/28/2019 Osnove JAVA Programiranja Zbirka
48/318
7/28/2019 Osnove JAVA Programiranja Zbirka
49/318
7/28/2019 Osnove JAVA Programiranja Zbirka
50/318
K
protected
K
nadi
K int
K boolean
K double
K
K
H public static Main(String[] args)
H public static Main(String args[])
H public void main(String[] args)
H public static void main(String[] args)
H public static main(String[] args)
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
51/318
H void
H return
H public
H static
return
public static void main(String[] args) {
int max = 0;
if (max != 0)
System.out.println(max);else
return;
}
H
H
Math.pow()
public static void main(String[] args) {
Math.pow(2, 4);}
H
H
nPrint("a", 4)
nPrint()
void nPrint(String poruka, int n) {
while (n > 0) {
System.out.print(poruka);
n--;
}
}
H aaaaa
H aaaa
H aaa
7/28/2019 Osnove JAVA Programiranja Zbirka
52/318
H
aa
H a
nPrint()
void nPrint(String poruka, int n) {
while (n > 0) {
System.out.print(poruka);
n--;
}
}
k
int k = 2 ;
nPrint("Java je kul!", k);
H
H
H
H
public class Test {
public static void main(String[] args) {
System.out.println(xMetod(5));
}
public double xMetod(int n, double t) {
System.out.println("double");
return t;
}
public int xMetod(int n) {
System.out.println("int");
return n;
}
}
H int 5
7/28/2019 Osnove JAVA Programiranja Zbirka
53/318
H
double
5
H double
H
int
H
xMetod()
public class Test {
public static void main(String[] args) {
System.out.println(m(2));
}
public int m(int n) {
return n;
}
public void m(int n) {
System.out.println(n);
}
}
H
m()
H
m()
H 2
H
2
H
H
H
H
k
7/28/2019 Osnove JAVA Programiranja Zbirka
54/318
7/28/2019 Osnove JAVA Programiranja Zbirka
55/318
public static void rMetod(int[] x, int n) {
System.out.print(x[n - 1] + " ");
rMetod(x, n - 1);
}
}
H 1 2 3 4 5
H
1 2 3 4 5
x
H 5 4 3 2 1
H 5 4 3 2 1
x
public class Test {
public static void main(String[] args) {
rMetod(3);
}
public static void rMetod(int n) {
if (n > 1) {System.out.print((n - 1) + " ");
rMetod(n - 1);
}
}
}
H rMetod()
H
1 2 3
H 3 2 1
H 1 2
H
2 1
public class Test {
public static void main(String[] args) {
rMetod(2);
}
7/28/2019 Osnove JAVA Programiranja Zbirka
56/318
7/28/2019 Osnove JAVA Programiranja Zbirka
57/318
7/28/2019 Osnove JAVA Programiranja Zbirka
58/318
7/28/2019 Osnove JAVA Programiranja Zbirka
59/318
H sortiraj(niz)
H sortiraj(niz, niz.length)
H sortiraj(niz, niz.length - 1)
H sortiraj(niz, niz.length + 1)
public static int nadiBroj(int[] niz, int broj) {
return nadiBroj(niz, broj, 0, niz.length - 1);
}
public static int nadiBroj(int[] niz, int broj,
int leviKraj, int desniKraj) {
if (leviKraj > desniKraj) // broj nije naden u nizu
return -1;
// Pretraivanje prve ili druge polovine niza
int sredina = (leviKraj + desniKraj) / 2;
if (broj < niz[sredina])
return nadiBroj(niz, broj, leviKraj, sredina - 1);
else if (broj > niz[sredina])
return ;
else
return sredina;
}
H nadiBroj(niz, broj, sredina + 1, leviKraj)
H nadiBroj(niz, broj, sredina - 1, leviKraj)
H nadiBroj(niz, broj, desniKraj, sredina + 1)
H nadiBroj(niz, broj, sredina + 1, desniKraj)
7/28/2019 Osnove JAVA Programiranja Zbirka
60/318
7/28/2019 Osnove JAVA Programiranja Zbirka
61/318
7/28/2019 Osnove JAVA Programiranja Zbirka
62/318
7/28/2019 Osnove JAVA Programiranja Zbirka
63/318
6
H
H
H
H
H
H
H
H
H method
H class
H main
H object
7/28/2019 Osnove JAVA Programiranja Zbirka
64/318
H
H
H
H
K
K
K void
K
K new
public class Test {
public static void main(String[] args) {
A a = new A();
a.prikai();
}
}
class A {
String s;
public A(String s) {
this.s = s;}
public void prikai() {
System.out.println(s);
}
}
K A
K A
7/28/2019 Osnove JAVA Programiranja Zbirka
65/318
K
K A a =
new A(); main A a = new A("poruka");
public class Test {
public static void main(String[] args) {
B c = new B(2);
}
}
class B {
int i;
public void b(int j) {
i = j;
}
}
H B
H
B
H B
int
H
Krug k = new Krug()
H k
H
k
H k Krug
H k Krug
7/28/2019 Osnove JAVA Programiranja Zbirka
66/318
public class Test {
int x;
public Test(String s) {
System.out.println("Test");
}
public static void main(String[] args) {
Test t = null;
System.out.println(t.x);
}
}
H t
H x
H
Test
H
t
H t null
t.x
H
H true null
H false
null
H true
null
H false
null
H false
void
K
K
7/28/2019 Osnove JAVA Programiranja Zbirka
67/318
K
K
K
public class Test {
public static void main(String[] args) {
double precnik;
final double PI= 3.15169;
double povrina = precnik * precnik * PI;
System.out.println("Povrina je " + povrina);
}
}
H precnik
H PI
H PI
H PI
H
public class Test {
int x;
public Test(String s) {System.out.println("Test");
}
public static void main(String[] args) {
Test t = new Test();
System.out.println(t.x);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
68/318
H
System.out.println()
H x
H
Test
H
H 0
H
H
H
H
H
H
H
H
H
H
? static
public class Test {
private int broj;
public ? int kvadrat(int n) {
return n * n;
7/28/2019 Osnove JAVA Programiranja Zbirka
69/318
7/28/2019 Osnove JAVA Programiranja Zbirka
70/318
n++;
}
}
H xMetod()
H xMetod()
H n j e 1
H n j e 2
H n j e 3
println main
public class Test {
int i;
static int s;
public static void main(String[] args) {
Test t1 = new Test();
System.out.println("t1.i je " + t1.i + ", t1.s is " + t1.s);Test t2 = new Test();
System.out.println("t2.i je " + t2.i + ", t2.s je " + t2.s);
Test t3 = new Test();
System.out.println("t3.i je " + t3.i + ", t3.s je " + t3.s);
}
public Test() {
i++;
s++;
}
}
H t2.i je 1, t2.s je 1H t2.i je 1, t2.s je 2
H t2.i je 2, t2.s je 2
H t2.i je 2, t2.s je 1
println
main
7/28/2019 Osnove JAVA Programiranja Zbirka
71/318
public class Test {
int i;
static int s;
public static void main(String[] args) {
Test t1 = new Test();
System.out.println("t1.i je " + t1.i + ", t1.s is " + t1.s);
Test t2 = new Test();
System.out.println("t2.i je " + t2.i + ", t2.s je " + t2.s);
Test t3 = new Test();
System.out.println("t3.i je " + t3.i + ", t3.s je " + t3.s);
}
public Test() {
i++;
s++;
}
}
H t3.i je 1, t3.s je 1
H t3.i je 1, t3.s je 2
H t3.i je 1, t3.s je 3
H t3.i je 3, t3.s je 1
H t3.i je 3, t3.s je 3
public class Test {
public static void main(String[] args) {
A a = new A();
a.n++;
}
}
class A {
int n;
private A() {
}
}
H
A
7/28/2019 Osnove JAVA Programiranja Zbirka
72/318
H
A
H n
H
b.n println
public class Test {
public static void main(String[] args) {
int k = 0;
Brojac b = new Brojac();
for (int i = 0; i < 100; i++)
uvecaj(b, k);
System.out.println("b.n = " + b.n);
System.out.println("k = " + k);
}
public static void uvecaj(Brojac b, int k) {
b.n++;
k++;
}
}
class Brojac {
int n;
public Brojac(int n) {
this.n = n;
}
public Brojac() {
this.n = 1;
}
}
H b.n = 101
H b.n = 100
H b.n = 99
H b.n = 98
H b.n = 0
7/28/2019 Osnove JAVA Programiranja Zbirka
73/318
k
println
public class Test {
public static void main(String[] args) {
int k = 0;
Brojac b = new Brojac();
for (int i = 0; i < 100; i++)
uvecaj(b, k);
System.out.println("b.n = " + b.n);
System.out.println("k = " + k);}
public static void uvecaj(Brojac b, int k) {
b.n++;
k++;
}
}
class Brojac {
int n;
public Brojac(int n) {
this.n = n;}
public Brojac() {
this.n = 1;
}
}
H k = 101
H k = 100
H k = 99
H k = 98H k = 0
Krug
public class Krug {
private double precnik;
7/28/2019 Osnove JAVA Programiranja Zbirka
74/318
public Krug(double precnik) {
precnik = precnik;
}
}
H Krug main()
H Krug
Krug k = new Krug(2.35) k
H Krug precnik
= precnik;
H Krug
public class Test {
private double x;
public Test(double x) {
this.t();
this.x = x;}
public Test() {
System.out.println("Podrazumevani konstruktor");
this(23);
}
public void t() {
System.out.println("Poziv metoda t()");
}
}
K this.t() Test(double x)
t()
K this.x Test(double x)
x
K this(23) Test()
System.out.println("Podrazumevani konstruktor");
K this(23) Test() this(23.0)
7/28/2019 Osnove JAVA Programiranja Zbirka
75/318
Calendar
GregorianCalendar java.util
Tacka Kvadrat Krug
Krug
KompleksanBroj
KompleksanBroj
main()
RimskiBroj
RimskiBroj
main()
KockaZaIgru
Brojac
7/28/2019 Osnove JAVA Programiranja Zbirka
76/318
7/28/2019 Osnove JAVA Programiranja Zbirka
77/318
7/28/2019 Osnove JAVA Programiranja Zbirka
78/318
K Math.random() * 100
K i + 10
K i + 6.5
public class Test {
public static void main(String[] args) {
int[ ] a = new int[3];
System.out.println("a[0] je " + a[0]);}
}
H a
H a
H
a[0]
H a[0] je
0
K int i = new int(30);
K double[] d = new double[30];
K int[] i = {3, 4, 3, 2};
K char[] c = new char();
K char[] c = new char{a, b, c, d};
K char[] c = {a, b};
int[] a = {1, 2, 3, 4}
a.length
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
79/318
public class Test {
public static void main(String[] args) {
int[ ] a = new int[5];
int i;
for (i = 0; i < a.length; i++)
a[i] = i;
System.out.print(a[i] + " ");
}
}
H 0 1 2 3 4
H
4
H a[5]
main
H i print
main
public class Test {
public static void main(String[] args) {
int[] a = {120, 200, 016};
for (int i = 0; i < a.length; i++)
System.out.print(a[i] + " ");
}
}
H 120 200 16
H 120 200 14
H
120 200 22
H 016 16
lista2
public class Test {
public static void main(String[] args) {
int[] lista1 = {1, 2, 3};
7/28/2019 Osnove JAVA Programiranja Zbirka
80/318
int[] lista2 = {1, 2, 3};
lista2 = lista1;
lista1[0] = 0; lista1[1] = 1; lista2[2] = 2;
for (int i = 0; i < lista2.length; i++)
System.out.print(lista2[i] + " ");
}
}
H 1 2 3
H 1 1 1
H 0 1 2H 0 1 3
lista1
public class Test {
public static void main(String[] args) {
int[] lista1 = {1, 2, 3};
int[] lista2 = {1, 2, 3};
lista2 = lista1;lista1[0] = 0; lista1[1] = 1; lista2[2] = 2;
for (int i = 0; i < lista1.length; i++)
System.out.print(lista1[i] + " ");
}
}
H 1 2 3
H 1 1 1
H 0 1 2
H 0 1 3
public class Test {
public static void main(String[] args) {
int[] x = {1, 2, 3, 4};
int[] y = x;
7/28/2019 Osnove JAVA Programiranja Zbirka
81/318
x = new int[2];
for (int i = 0; i < y.length; i++)
System.out.print(y[i] + " ");
}
}
H 1 2 3 4
H 0 0
H 0 0 3 4
H 0 0 0 0
public class Test {
public static void main(String[] args) {
int[] x = {1, 2, 3, 4};
int[] y = x;
x = new int[2];
for (int i = 0; i < x.length; i++)
System.out.print(x[i] + " ");
}
}
H 1 2 3 4
H 0 0
H 0 0 3 4
H 0 0 0 0
public class Test {
public static void main(String[] args) {
final int[] x = {1, 2, 3, 4};
int[] y = x;
x = new int[2];
7/28/2019 Osnove JAVA Programiranja Zbirka
82/318
for (int i = 0; i < y.length; i++)
System.out.print(y[i] + " ");
}
}
H 1 2 3 4
H 0 0
H x = new int[2]
x
final
H
x
x
final
int[] lista = new int[5];
lista = new int[10];
H
lista
H
lista
H lista
H lista
public class Test {
public static void main(String[] args) {int[ ] a = new int[4];
a[1] = 1;
a = new int[2];
System.out.println("a[1] je " + a[1]);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
83/318
H
a = new int[2]
a
H println a[1]
H a[1] je 0
H a[1] je 1
a
b
Hb = Arrays.copyOf(a, a.length);
H b = Arrays.copyOf(a);
H Arrays.copyOf(b, a, a.length);
H Arrays.copyOf(a, b);
H
H
H
H
public class Test {
public static void main(String[] args) {
int[] x = {1, 2, 3, 4, 5};
uvecaj(x);
int[] y = {1, 2, 3, 4, 5};
uvecaj(y[0]);
System.out.println(x[0] + " " + y[0]);
}
public static void uvecaj(int[] a) {
for (int i = 0; i < a.length; i++)
a[i]++;
}
7/28/2019 Osnove JAVA Programiranja Zbirka
84/318
public static void uvecaj(int n) {
n++;
}
}
H
H 1 1
H 2 2
H 2 1
H 1 2
lista
public class Test {
public static void main(String[] args) {
int[] lista = {1, 2, 3, 4, 5};
obrniNiz(lista);
for (int i = 0; i < lista.length; i++)System.out.print(lista[i] + " ");
}
public void obrniNiz(int[] a) {
int[ ] b = new int[a.length];
for (int i = 0; i < a.length; i++)
b[i] = a[a.length - 1 - i];
a = b;
}
}
H 1 2 3 4 5
H 5 4 3 2 1
H 5 4 1 2 3
H 1 2 5 4 3
7/28/2019 Osnove JAVA Programiranja Zbirka
85/318
public class Test {
public static void main(String[] args) {
xMetod(new double[]{3, 3});
xMetod(new double[5]);
xMetod(new double[3]{1, 2, 3});
}
public void xMetod(double[] a) {
System.out.println(a.length);
}
}
H new double[]{3,
3} xMetod()
H
new double[5]
xMetod()
H
new double[3]{1,
2, 3}
xMetod()
H a null
xMetod()
H
H
H
H
H
H
H
H
public static int[] xMetod()
return
xMetod()
7/28/2019 Osnove JAVA Programiranja Zbirka
86/318
7/28/2019 Osnove JAVA Programiranja Zbirka
87/318
int[] lista2 = obrniNiz(lista1);
for (int i = 0; i < lista2.length; i++)
System.out.print(lista2[i] + " ");
}
public int[] obrniNiz(int[] a) {
int[ ] b = new int[a.length];
for (int i = 0; i < a.length; i++)
b[i] = a[a.length - 1 - i];
return b;}
}
H 1 2 3 4 5
H 5 4 3 2 1
H 5 4 1 2 3
H 1 2 5 4 3
Krug[] k = new Krug[10]
H k
H k Krug
H
k
Krug
H k Krug
Test
public static void main(String[] args)
args
"abc"
Test
java Test "+" 3 "abc" 2
H args[0]
H args[1]
H args[2]
7/28/2019 Osnove JAVA Programiranja Zbirka
88/318
H args[3]
prikai()
K public void prikai(String... niska, double... broj)
K public void prikai(double... broj, String ime)
K public void double... prikai(double d1, double d2)
K public void prikai(double... broj)
K public void prikai(int n, double... broj)
public class Test {
public static void main(String[] args) {
double[] d = {1.0, 2.0, 3.0};
System.out.println(prosek(d));
System.out.println(prosek(1, 2, 2, 1, 4));
System.out.println(prosek( new double[]{1, 2, 3}));System.out.println(prosek(1.0, 2.0, 2.0, 1.0));
}
public static double prosek (double... brojevi) {
double zbir = 0;
for (double e : brojevi)
zbir = zbir + e;
return zbir / brojevi.length;
}
}
H prosek(d)
println
H
prosek(1, 2, 2, 1, 4)
println
H prosek(new double[]{1,
2, 3}) println
H
prosek(1.0, 2.0, 2.0,
1.0)
println
7/28/2019 Osnove JAVA Programiranja Zbirka
89/318
7/28/2019 Osnove JAVA Programiranja Zbirka
90/318
public class Test {
public static void main(String[] args) {
boolean[][] x = new boolean[3][];
x[0] = new boolean[1];
x[1] = new boolean[2];
x[2] = new boolean[3];
System.out.println("x[2][2] je " + x[2][2]);
}
}
H new boolean[3][]
H
x[2][2]
null
H x[2][2] je
null
H x[2][2] je
false
7/28/2019 Osnove JAVA Programiranja Zbirka
91/318
7/28/2019 Osnove JAVA Programiranja Zbirka
92/318
7/28/2019 Osnove JAVA Programiranja Zbirka
93/318
7/28/2019 Osnove JAVA Programiranja Zbirka
94/318
7/28/2019 Osnove JAVA Programiranja Zbirka
95/318
8
H
H
H
H
K
K
K A B A B
K A B A
B
K A B A
B
7/28/2019 Osnove JAVA Programiranja Zbirka
96/318
7/28/2019 Osnove JAVA Programiranja Zbirka
97/318
public class Test extends A {
public static void main(String[] args) {
Test t = new Test();
t.prikai();
}
}
class A {
String s;
public A(String s) {
this.s = s;}
public void prikai() {
System.out.println(s);
}
}
K Test
Test()
K
Test
Test()
A
A
K A
A()
public class Test extends A {
public static void main(String[] args) {
Test t = new Test();
}
}
class A extends B {
public A() {
System.out.println(
"Pozvan podrazumevani konstruktor klase A");
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
98/318
class B {
public B() {
System.out.println(
"Pozvan podrazumevani konstruktor klase B");
}
}
H
H Pozvan podrazumevani konstruktor klase A
H Pozvan podrazumevani konstruktor klase B
H Pozvan podrazumevani konstruktor klase A
Pozvanpodrazumevani konstruktor klase B
H Pozvan podrazumevani konstruktor klase B Pozvan
podrazumevani konstruktor klase A
super
H
super
H
super
H super
public class Test {
public static void main(String[] args) {
B b = new B();
b.m(5);
System.out.println("b.i je " + b.i);
}
}
class A {
int i;
public void m(int i) {
this.i = i;
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
99/318
7/28/2019 Osnove JAVA Programiranja Zbirka
100/318
public class Test {
public static void main(String[] args) {
Tim partizan = new Tim("Partizan", "Beograd");
Tim zvezda = new Tim("Crvena zvezda", "Beograd");
KoarkakaUtakmica finale;
finale = new KoarkakaUtakmica(partizan, zvezda);
finale.domacinPoentirao(3);
finale.gostPoentirao(2);
finale.pobednikUtakmice();
}
}
class Tim {
private String ime;
private String mesto;
public Tim(String ime, String mesto) {
this.ime = ime;
this.mesto = mesto;
}
public String toString() {
return ime + " (" + mesto + ")";
}
}
class KoarkakaUtakmica {
public Tim domacin, gost;
public int brojPoenaDomacina, brojPoenaGosta;
public KoarkakaUtakmica(Tim d, Tim g) {
domacin = d;
gost = g;
}
public void domacinPoentirao(int brojPoena) {
brojPoenaDomacina += brojPoena;}
public void gostPoentirao(int brojPoena) {
brojPoenaGosta += brojPoena;
}
public void pobednikUtakmice() {
if (brojPoenaDomacina > brojPoenaGosta)
7/28/2019 Osnove JAVA Programiranja Zbirka
101/318
7/28/2019 Osnove JAVA Programiranja Zbirka
102/318
K
toString()
A
System.out.println(a)
K toString() Object
System.out.println(o)
equals()
Object
String
H public boolean equals(String s)
H public boolean equals(Object o)
H public static boolean equals(Object o)
H public boolean equals(String s1, String s2)
public class Test {
public static void main(String[] args) {
Object a1 = new A();
Object a2 = new A();
System.out.println(a1.equals(a2));
}
}
class A {
int x;
public boolean equals(Object o) {
A a = (A)o;
return this.x == a.x;
}
}
H a1.equals(a2)
Object
H true
H false
7/28/2019 Osnove JAVA Programiranja Zbirka
103/318
public class Test {
public static void main(String[] args) {
Object a1 = new A();
Object a2 = new A();
System.out.println(a1.equals(a2));
}
}
class A {
int x;
public boolean equals(A a) {
return this.x == a.x;}
}
H a1.equals(a2)
Object
H true
H false
public class Test {
public static void main(String[] args) {
A a 1 = new A();
A a 2 = new A();
System.out.println(a1.equals(a2));
}
}
class A {
int x;
public boolean equals(A a) {
return this.x == a.x;}
}
H a1.equals(a2)
Object
H true
H false
7/28/2019 Osnove JAVA Programiranja Zbirka
104/318
public class Test {
public static void main(String[] args) {
m(new MasterStudent());
m(new Student());
m(new Osoba());
m(new Object());
}
public static void m(Student x) {
System.out.println(x.toString());
}}
class MasterStudent extends Student {
}
class Student extends Osoba {
public String toString() {
return "Student";
}
}
class Osoba extends Object {
public String toString() {return "Osoba";
}
}
K m(new MasterStudent())
K m(new Student())
K
m(new Osoba())
K m(new Object())
class C 1 { }
class C2 extends C 1 { }
class C3 extends C 2 { }
class C4 extends C 1 { }
C1 c1 = new C1();
C2 c2 = new C2();
C3 c3 = new C3();
C4 c4 = new C4();
7/28/2019 Osnove JAVA Programiranja Zbirka
105/318
7/28/2019 Osnove JAVA Programiranja Zbirka
106/318
H ArrayList()
x ArrayList
[Java, C++]
[Java]
K x.remove("C++")
K x.remove(0)
K x.remove(1)
Kx.remove(2)
x ArrayList
[Java, C++]
x.add("Pascal")
H [Java, Pascal]
H [Java, C++, Pascal]
H [Pascal, Java, C++]
H [Java, Pascal, C++]
x
ArrayList
H x.first()
H x.get(0)
H x.get(1)
H x.get()
x
ArrayList
H x.getSize()
H x.getLength(0)
H x.length(1)
H x.size()
H class A { }
7/28/2019 Osnove JAVA Programiranja Zbirka
107/318
H class A { private A(){ } }
H final class A { }
H class A { protected A(){ } }
7/28/2019 Osnove JAVA Programiranja Zbirka
108/318
PovezanaLista
ElementListe PovezanaLista
equals()
PovezanaLista
PoliLinija
PovezanaLista
7/28/2019 Osnove JAVA Programiranja Zbirka
109/318
9
K
K
K
K
K
H public enum osnovnaBoja {crvena, uta, plava}H public int[] osnovnaBoja = {1, 2, 3}
H public enum OsnovnaBoja {CRVENA, UTA, PLAVA}
H public String[] osnovnaBoja = {"crvena", "uta", "plava"}
H public String boja1 = "crvena", boja2 = "uta", boja3 = "plava"
7/28/2019 Osnove JAVA Programiranja Zbirka
110/318
7/28/2019 Osnove JAVA Programiranja Zbirka
111/318
H Kreni
H Pazi
A
H class A { abstract void aMetod() { } }
H class A { abstract void aMetod(); }
H abstract class A { abstract void aMetod(); }
H public class abstract A { abstract void aMetod(); }
aMetod()
H public abstract aMetod();
H public abstract void aMetod();
H public void abstract aMetod();
H public void aMetod() { }
H public abstract void aMetod() { }
K
K
K
K
K
K
K
K
7/28/2019 Osnove JAVA Programiranja Zbirka
112/318
7/28/2019 Osnove JAVA Programiranja Zbirka
113/318
K A a = new A();
K A a = new B();
K B b = new A();
K B b = new B();
public class Test {public static void main(String[] args) {
Vocka[] voc e = {new Vocka(2), new Vocka(3), new Vocka(1)};
java.util.Arrays.sort(vo ce);
}
}
class Vocka {
private double teina;
public Vocka(double teina) {
this.teina = teina;
}
}
H
Vocka
H voce
H voce Vocka
Comparable
Vocka
H
Radnik
public class Radnik implements Comparable {
double plata;
public int compareTo(Object o) {
Radnik r = (Radnik) o;
7/28/2019 Osnove JAVA Programiranja Zbirka
114/318
if (this.plata < r.plata) return -1;
if (this.plata > r.plata) return +1;
return 0;
}
public static Radnik max(Radnik r1, Radnik r2) {
if (r1.compareTo(r2) >= 0)
return r1;
else
return r2;
}
}
H
Radnik
H Radnik max()
static
H Radnik max()
int
H Radnik
K
K
public
K
K
A
Test
A
H A.class
H Test$A.class
H A$Test.class
H Test&A.class
7/28/2019 Osnove JAVA Programiranja Zbirka
115/318
H
H
H
H
object
K
K
extends
implements
K
K
Test
H A.class
H Test$A.class
H A$Test.class
H TestA.class
H Test$1.class
7/28/2019 Osnove JAVA Programiranja Zbirka
116/318
Karta
main()
Konverzije
Konvertor
PrenosnikUtakmice
Utakmica
Zapisnik Semafor
MobilniTelefon
PrenosnikUtakmice
GeometrijskiOblik
Uredaj
DaljinskiUpravljac
TV
DVDPlejer
7/28/2019 Osnove JAVA Programiranja Zbirka
117/318
7/28/2019 Osnove JAVA Programiranja Zbirka
118/318
7/28/2019 Osnove JAVA Programiranja Zbirka
119/318
10
K
K
K
K
java.awt
K Color
K Font
K Component
K JFrame
K JComponent
java.swing
K Color
K Font
K Component
7/28/2019 Osnove JAVA Programiranja Zbirka
120/318
K JFrame
K JComponent
import java.awt.*;
import javax.swing.*;
public class Test {
public static void main(String[] args) {
JButton dugmeOK = new JButton("OK");
JFrame okvir = new JFrame("Moj okvir");
okvir.add(dugmeOK);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);
}
}
H dugmeOK Button
H dugmeOK
JFrame
H
new JFrame("Moj okvir")
H
import java.awt.*;
import javax.swing.*;
public class Test {
public static void main(String[] args) {
JFrame okvir = new JFrame("Moj okvir");
okvir.add(new JButton("OK"));okvir.add(new JButton("Cancel"));
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setSize(200, 200);
okvir.setVisible(true);
}
}
H OK
7/28/2019 Osnove JAVA Programiranja Zbirka
121/318
H
Cancel
H OK Cancel OK
Cancel
H OK Cancel OK
Cancel
import javax.swing.*;
public class Test {
public static void main(String[] args) {
JFrame okvir1 = new JFrame();
JFrame okvir2 = okvir1;
JFrame okvir3 = okvir2;
okvir1.setVisible( true);
okvir2.setVisible( true);
okvir3.setVisible( true);
}
}
H
H
H
H
import javax.swing.*;
public class Test extends JFrame {
public static void main(String[] args) {
JFrame okvir1 = new Test();
JFrame okvir2 = new Test();JFrame okvir3 = new Test();
okvir1.setVisible( true);
okvir2.setVisible( true);
okvir3.setVisible( true);
}
}
H
7/28/2019 Osnove JAVA Programiranja Zbirka
122/318
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
okvir.setBounds(100, 150, 300, 200);
7/28/2019 Osnove JAVA Programiranja Zbirka
123/318
K
K
K
K
H
H
H
H
H FlowLayout
H GridLayout
H BorderLayout
H Nijedan
H FlowLayout
H GridLayout
H BorderLayout
H BorderLayout
H BorderLayout
p JPanel BorderLayout
K p.setLayout(new BorderLayout());
K p.setLayout(BorderLayout());
7/28/2019 Osnove JAVA Programiranja Zbirka
124/318
K p.setLayout(new BorderLayout(5, 10));
K p.setLayout(new BorderLayout(BorderLayout.CENTER));
K p.setLayout(BorderLayout(BorderLayout.CENTER));
k
p
JPanel
H k.add(p);
H p.add(k);
H p.insert(k);
H p.append(k);
H k.addContentPane(p);
H repaint()
H update()
H paintComponent()
H init()
K Graphics new Graphics()
K
Graphics
K
paintComponent()
K paintComponent()
repaint()
paintComponent()
H JLabel
H JButton
H JFrame
H JComponent
7/28/2019 Osnove JAVA Programiranja Zbirka
125/318
import java.awt.*;
import javax.swing.*;
public class Test extends JFrame {
public Test() {
add(new MojaKomponenta("Zdravo narode!"));
}
public static void main(String[] args) {
JFrame okvir = new JFrame();okvir.setSize(300, 300);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);
}
}
class MojaKomponenta extends JComponent {
private String poruka;
public MojaKomponenta(String poruka) {
this.poruka = poruka;
}
public void paintComponent(Graphics g) {
g.drawString(poruka, 20 ,20);
}
}
K Test
K Zdravo narode!
K
K Zdravo narode!
new JFrame()
new Test()
K Zdravo narode!
new JFrame() new Test("Zdravo
narode!")
7/28/2019 Osnove JAVA Programiranja Zbirka
126/318
import java.awt.*;
import javax.swing.*;
public class Test extends JFrame {
public Test() {
add(new MojaKomponenta());
}
public static void main(String[] args) {
JFrame okvir = new Test();
okvir.setSize(300, 300);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);okvir.setVisible(true);
}
}
class MojaKomponenta extends JComponent {
String poruka;
public void setPoruka(String poruka) {
this.poruka = poruka;
}
public void paintComponent(Graphics g) {g.drawString(poruka, 20 ,20);
}
}
K Test
K poruka null
g.drawString(poruka, 20 ,20) paintComponent()
K
K Zdravo narode!
new Test() new Test("Zdravo
narode!")
K Zdravo narode!
new MojaKomponenta() Test
(new MojaKomponenta()).setPoruka("Zdravo narode!")
g
Graphics
7/28/2019 Osnove JAVA Programiranja Zbirka
127/318
H g.drawRect(20, 50, 20, 20);
H g.drawRectFill(20, 20, 20, 50);
H g.drawRect(20, 20, 20, 50);
H g.drawRectFill(20, 50, 20, 20);
g2
Graphics2D
K g2.draw(Rectangle2D(20, 20, 20, 50));
K g2.draw(Rectangle2D.Double(20, 20, 20, 50));
K g2.draw(new Rectangle2D.Double(20, 20, 20, 50));
K g2.draw(new Rectangle2D.Float(20, 20, 20, 50));
K g2.draw(new Rectangle2D.Double(20.0, 20.0, 20.0, 50.0));
K g2.draw(new Rectangle2D.Float(20.0, 20.0, 20.0, 50.0));
K g2.draw(new Rectangle2D.Float(20.0F, 20.0F, 20.0F, 50.0F));
K g2.draw(new Rectangle2D(20, 20, 20, 50));
g2 Graphics2D
t
K Point2D t = new Point2D(getWidth(), getHeight());
K Point2D t = new Point2D.Double(getWidth(), getHeight());
K Point2D.Double t = new Point2D.Double(getWidth(), getHeight());
K Point2D t = new Point2D.Double(0, 0);
K Point2D t = new Point2D.Double(0, getHeight());
K Point2D t = new Point2D.Double(getWidth(), 0);
K Point2D t = new Point2D.Double(getHeight(), getWidth());
K new Color(0, 0, 0)
K new Color(0, 266, 0)
7/28/2019 Osnove JAVA Programiranja Zbirka
128/318
K new Color(255, 255, 255)
K new Color(1, 2, 3)
k
K k.setBackground(Color.PINK);
K k.setBackground(new Color(0, 128, 128));
K k.setBackground(Color(0, 128, 128));
K setBackground(Color.YELLOW)K k.setForeground(Color.RED);
K new Font("SansSerif", Font.BOLD, 36)
K new Font("SansSerif", Font.CAPS, 20)
K new Font("SansSerif", Font.BOLD, 10.5)
K new Font("Serif", Font.BOLD + Font.ITALIC, 12)
K new Font("Dialog", Font.PLAIN, 10)
K new Font("Cyrillic", Font.PLAIN, 12)
K new Font(Serif, Font.PLAIN, 12)
H ItemEvent
H MouseEvent
H MouseMotionEvent
H ActionEvent
H WindowEvent
H ItemEvent
H MouseEvent
H MouseMotionEvent
7/28/2019 Osnove JAVA Programiranja Zbirka
129/318
H ActionEvent
H WindowEvent
K
K
K
EventObject
K
java.events
K
Event
Listener
H getSource()
H getActionCommand()
H getTimeStamp()
H getWhen()
actionPerformed()
H
H
H
H
Object
H
EventObject
K
K
7/28/2019 Osnove JAVA Programiranja Zbirka
130/318
7/28/2019 Osnove JAVA Programiranja Zbirka
131/318
7/28/2019 Osnove JAVA Programiranja Zbirka
132/318
okvir.setSize(300, 300);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);
}
}
H import java.awt.event.*
import java.awt.*
H
Test
JFrame
ActionListener
H
Dugme OK je pritisnuto
H
Dugme OK je pritisnuto
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test extends JFrame {
public Test() {
JButton dugmeOK = new JButton("OK");
JButton dugmeNOK = new JButton("Nije OK");
add(dugmeOK);
add(dugmeNOK);
dugmeOK.addActionListener( this);
dugmeNOK.addActionListener( this);
}
public void actionPerformed(ActionEvent e) {
System.out.println("Jedno od dva dugmeta je pritisnuto");
}
public static void main(String[] args) {
JFrame okvir = new Test();
okvir.setSize(300, 300);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
133/318
H
H
Test
ActionListener
H actionPerformed()
H Test
new Test() okvir JFrame
H
Jedno od dva dugmeta je pritisnuto
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test extends OkvirRukovalac {
JButton dugmeOK = new JButton("OK");
public Test() {
add(dugmeOK);
dugmeOK.addActionListener( this);
}
public void actionPerformed(ActionEvent e) {
super.actionPerformed(e);
if (e.getSource() == dugmeOK)
System.out.println("Pritisnuto dugme OK");
}
public static void main(String[] args) {
OkvirRukovalac okvir = new Test();
okvir.setSize(200, 100);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);
}
}
class OkvirRukovalac extends JFrame implements ActionListener {
7/28/2019 Osnove JAVA Programiranja Zbirka
134/318
JButton dugmeNOK = new JButton("Nije OK");
public OkvirRukovalac() {
setLayout(new FlowLayout());
add(dugmeNOK);
dugmeNOK.addActionListener( this);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == dugmeNOK)
System.out.println("Pritisnuto dugme NOK");
}
}
K
K
Pritisnuto dugme OK
K Pritisnuto dugme NOK
K
super.actionPerformed(e)
actionPerformed()
Test
Pritisnuto
dugme NOK
H ActionAdapter
H MouseAdapter
H WindowAdapter
7/28/2019 Osnove JAVA Programiranja Zbirka
135/318
7/28/2019 Osnove JAVA Programiranja Zbirka
136/318
7/28/2019 Osnove JAVA Programiranja Zbirka
137/318
7/28/2019 Osnove JAVA Programiranja Zbirka
138/318
7/28/2019 Osnove JAVA Programiranja Zbirka
139/318
1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
140/318
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H Test.txt
H Test.class
H Test.java
H Main.java
H Main.txt
H .java
H .obj
H .class
H .exe
7/28/2019 Osnove JAVA Programiranja Zbirka
141/318
H javac Test.java
H compile Test.java
H prevedi Test.java
H javap Test.java
H javac Test
H izvrsi Test
H java Test
Hjava Test.class
K
K
K
K
K
7/28/2019 Osnove JAVA Programiranja Zbirka
142/318
7/28/2019 Osnove JAVA Programiranja Zbirka
143/318
2
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
144/318
H
H
H
H
H
H import
H export
H module
H package
K
K
package
K import
K java.lang
K /** tekst komentara */
K // tekst komentara
K -- tekst komentara
K /* tekst komentara */
K ** tekst komentara **
K
K
K
K
K
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
145/318
3
K public
K static
K void
K class
K tacno
K 9x
K ekran
K brojStudenata
K znak+ili-
K 3prasetaK tri praseta
K precnik
K bzvz
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
146/318
H
H
H long
H int
H short
H byte
K floatK int
K long
K double
K boolean
H
H
H
H
K tacno
K true
K false
K 0
K 1
K netacno
K kredit
K Kredit
K KREDIT
K kamatnaStopa
K KamatnaStopa
K kamatna_stopa
7/28/2019 Osnove JAVA Programiranja Zbirka
147/318
K int duina; int irina;
K int duina, irina;
K int duina; irina;
K int duina, int irina;
K System.out.println(Java je kul!);
K System.println("Java je kul!");
K System.out.writeln("Java je kul!");
K System.out.println("Java je kul!");
K System.out.print("Java je kul!");
K System.out.printf("Java je kul!");
H 17 = x;
H x = 17;
H x := 17;
H x == 17;
H int x = 17;H int x == 17;
H int x = 17;
H int x = 17.0;
H
H
H
H
K 1 / 2
K 1.0/2
K 1.0/2.0
K (double) (1/ 2)
K (double) 1 / 2
K 1/2.0
7/28/2019 Osnove JAVA Programiranja Zbirka
148/318
H 2 % 1
H 15%4
H 25%5
H 37%6
K a / b * b
K a / (b * b)
K 1.0 * a / b * b
K 1.0*
a / (b*
b)
K (double) a / (b * b)
K float f = -34;
K int t = 23;
K short s = 10;
K int t = (int)false;
K int t = 4.5;
H x j e 5 i y je 6H x je 6.0 i y je 6.0
H x j e 6 i y je 6
H x je 5.5 i y je 5
H x je 5.5 i y je 5.0
K i = i + (2 - 1);
K i = i + 1 ;
K i += 1;
K i = 1 + i ;K i++;
H Mesec je 09
H
Mesec je 9
H Mesec je 9.0
H 09
7/28/2019 Osnove JAVA Programiranja Zbirka
149/318
H System.terminate(0)
H System.halt(0)
H System.exit(0)
H System.stop(0)
H Math.power(x, y)
H Math.exp(x, y)
H Math.pow(x, y)
H Math.pow(y, x)
H char c = A;
H char c = 23;
H char c = "A";
H char c = "23";
K string s = A;
K String s = 23;
KString s = "A";
K String s = "23";
H a
H v
H
K String s = "neki string";
K String s3 = s1 + s2;
K s1 >= s2K int i = s1.length;
K s1.charAt(0) = ?;
K String s3 = s1 - s2;
K s1 == s2
K boolean b = s1.compareTo(s2);
7/28/2019 Osnove JAVA Programiranja Zbirka
150/318
K char c = s1[0];
K char c = s1.charAt(s1.length());
K char c = s1.charAt(s1.length() - 1);
H
H
H true
H false
H javaprogram
H Java program
H Java_program
H Javaprogram
H
K i = Integer.parseInt(s);
K i = (new Integer(s)).intValue();
Ki = Integer.valueOf(s).intValue();
K i = Integer.valueOf(s);
K i = (int)(Double.parseDouble(s));
K d = Double.parseDouble(s);
K d = (new Double(s)).doubleValue();
K d = Double.valueOf(s).doubleValue();
K d = (double)(Integer.parseInt(s));
K s = d;K s = d.toString();
K s = (new Double(d)).toString();
K s = (Double.valueOf(d)).toString();
H =
H 0) && (x > 0)
K (x > 0) || (x < 0)
K (x != 0) || (x = 0)
K (-10 < x < 0)
H 1 < x < 1 0 0 & & x < 0
H ((x < 100) && (x > 1)) || (x < 0)
H ((x < 100) && (x > 1)) && (x < 0)
H (x != 0) || (x = 0)
H (1 > x > 100) || (x < 0)
H (1 < x < 100) || (x < 0)
H
H
H
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
152/318
H
H
H
H
H
7/28/2019 Osnove JAVA Programiranja Zbirka
153/318
public class ImePrezime {
public static void main(String[] args) {
System.out.println(" +----------------+");
System.out.println(" | |");
System.out.println(" | Dejan ivkovic |");
System.out.println(" | |");System.out.println(" +----------------+");
}
}
public class Inicijali {
public static void main(String[] args) {
System.out.println(" ** **");
System.out.println(" **");System.out.println(" ******* ************");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ** ** **");
System.out.println(" ******* ************");
}
}
public class A4 {
public static void main(String[] args) {
final double CM_PO_INCU = 2.54;
double irinaPapira = 21.0;
7/28/2019 Osnove JAVA Programiranja Zbirka
154/318
7/28/2019 Osnove JAVA Programiranja Zbirka
155/318
7/28/2019 Osnove JAVA Programiranja Zbirka
156/318
System.out.println();
System.out.print("Hipotenuza pravouglog trougla sa ");
System.out.print("katetama " + kateta1);
System.out.print(" i " + kateta2 + " je: ");
System.out.printf("%8.2f\n", hipotenuza);
zavrnoVreme = System.currentTimeMillis();
protekloVreme = (zavrnoVreme - pocetnoVreme)/1000.0;
System.out.println();
System.out.print("Vreme izvravanja u sekundama je: ");
System.out.println(protekloVreme);}
}
import java.util.*;
public class Tren {
public static void main(String[] args) {
int pakovanoVreme; // pakovani podaci vremenskog trenutka
int godina, mesec, dan, sat, minut;
// Ulaz programa se dobija preko tastature
Scanner tastatura = new Scanner(System.in);
// U citavanje podataka vremenskog trenutka
System.out.print("Unesite dan, mesec, godinu: ");
dan = tastatura.nextInt();
mesec = tastatura.nextInt();
godina = tastatura.nextInt();
System.out.print("Unesite sat, minut: ");
sat = tastatura.nextInt();
minut = tastatura.nextInt();
// Pomeranje ulevo bitova vremenskih podataka
godina = godina
7/28/2019 Osnove JAVA Programiranja Zbirka
157/318
// Pakovanje podataka vremenskog trenutka
pakovanoVreme = godina | mesec | dan | sat | minut;
// Prikazivanje pakovanog sadraja na ekranu
System.out.println("Pakovano vreme: " + pakovanoVreme);
// Raspakivanje podataka vremenskog trenutka
godina = pakovanoVreme >>> 20;
mesec = (pakovanoVreme >>> 16) & 0x0000000f;
dan = (pakovanoVreme >>> 11) & 0x0000001f;
sat = (pakovanoVreme >>> 6) & 0x0000001f;
minut = pakovanoVreme & 0x0000003f;
// Prikazivanje raspakovanog sadraja na ekranu
System.out.print("Raspakovano vreme: ");
System.out.print(dan + "." + mesec + "." + godina);
System.out.println(" " + sat + ":" + minut);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
158/318
7/28/2019 Osnove JAVA Programiranja Zbirka
159/318
4
K if (r != 0) System.out.println(r * r * Math.PI);
K if (r >= 0) System.out.println(r * r * Math.PI);
Kif (r > 0) System.out.println(r * r * Math.PI);
K if (r > 0) { System.out.println(r * r * Math.PI); }
K if {r > 0} System.out.println(r * r * PI);
K if (r 0) System.out.println(Math.pow(r, 2) * Math.PI);
H x > 0 i y > 0
H x < 0 i z > 0
H x < 0 i z < 0
H
H
H
H
To je tacno!
7/28/2019 Osnove JAVA Programiranja Zbirka
160/318
H
H
H
H
H
H Plata je veca od 3000
H Plata je veca od 4000
H Plata je veca od 3000 Plata je veca od 4000
H cena = 0.0
H
H
H cena = 15.0
H
H s1 i s2 ukazuju na isti string
H s1 i s2 ukazuju na razlicite stringove
H
H s1 i s2 ukazuju na isti string
H s1 i s2 ukazuju na razlicite stringove
H
H s1 i s2 imaju isti sadraj
H s1 i s2 imaju razlicit sadraj
H
H s1 i s2 imaju isti sadraj
H s1 i s2 imaju razlicit sadraj
H
7/28/2019 Osnove JAVA Programiranja Zbirka
161/318
H s1 i s2 ukazuju na isti string
H s1 i s2 imaju isti sadraj
H s1 i s2 imaju razlicit sadraj
H
H
H
H
H abcd
H a
H aA
H A
H ocena je 15
H ocena je 15 ocena je 15 ili 30
H
H Pograna ocena
H
break
H
default
switch
H d
switch double
H
H
H 20
H
H 20
H
7/28/2019 Osnove JAVA Programiranja Zbirka
162/318
H
H
H
K brojac < 1 0
K brojac < 1 0
K brojac < 1 0
K
brojac < 1 0
K brojac < 1 0
K
brojac < 1 0
H
H
H
H
H
H i = 5H
H i = 1
H
for
H d
for
double
H
d < 10
for
H
H 10
H 11
H 12
H 13
H 45
7/28/2019 Osnove JAVA Programiranja Zbirka
163/318
7/28/2019 Osnove JAVA Programiranja Zbirka
164/318
H
spetlja
H
upetlja
H
nastavak
H
7/28/2019 Osnove JAVA Programiranja Zbirka
165/318
import java.util.*;
public class Uskrs1 {
public static void main(String[] args) {
Scanner tastatura = new Scanner(System.in);
System.out.print("Unesite godinu za datum Uskrsa: ");
int g = tastatura.nextInt();
int a = g % 1 9 ;
int b = g % 4;
int c = g % 7;
int d = (19 * a + 24) % 30;
int e = ( 2 * b + 4 * c + 6 * d + 5 ) % 7 ;
System.out.print("Katoli cki Uskrs je u nedelju, ");
int f = 2 2 + d + e ;
if (f > 31)
System.out.printf("%d. aprila %d.\n", f - 31, g);else
System.out.printf("%d. marta %d.\n", f, g);
}
}
import java.util.*;
public class Uskrs2 {
public static void main(String[] args) {
Scanner tastatura = new Scanner(System.in);
System.out.print("Unesite godinu za datum Uskrsa: ");
int g = tastatura.nextInt();
int a = g % 1 9 ;
int b = g % 4;
7/28/2019 Osnove JAVA Programiranja Zbirka
166/318
int c = g % 7;
int d = (19 * a + 24) % 30;
int e = ( 2 * b + 4 * c + 6 * d + 5 ) % 7 ;
int f = 2 2 + d + e ;
int m = 3 ;
if (f > 31) {
f = f - 3 1 ;
m = 4;
}
if (g == 1954 || g == 1981 || g == 2049 || g == 2076)
f = f - 7 ;
System.out.print("Katoli cki Uskrs je u nedelju, ");System.out.printf("%d. %d. %d.\n", f, m, g);
}
}
import java.util.*;
public class PismoGlava1 {
public static void main(String[] args) {
final int PISMO = 0;
int brojBacanja, ishodBacanja;
int brojPisma, brojGlava;
Scanner tastatura = new Scanner(System.in);
while(true) {
System.out.print("Unesite broj bacanja novcica: ");
brojBacanja = tastatura.nextInt();
if (brojBacanja == 0) break;
brojPisma = 0;
brojGlava = 0;
for (int i = 0; i < brojBacanja; i++) {
ishodBacanja = (int)(Math.random() + 0.5);
if (ishodBacanja == PISMO)
brojPisma++;
else
brojGlava++;
}
System.out.print("Broj pisma Broj glava ");
System.out.print("Broj pisma/Broj bacanja ");
System.out.println("Broj glava/Broj bacanja ");
7/28/2019 Osnove JAVA Programiranja Zbirka
167/318
System.out.printf("%8d %12d %17.2f %25.2f\n",
brojPisma, brojGlava,
(double)brojPisma/brojBacanja,
(double)brojGlava/brojBacanja);
}
}
}
public class ZmijskeOci {
public static void main(String[] args) {
int brojBacanja = 0; // brojac bacanja dve kocke
int kocka1; // broj koji je pao na prvoj kocki
int kocka2; // broj koji je pao na drugoj kocki
do {
kocka1 = (int)(Math.random()*6) + 1; // baci prvu kocku
kocka2 = (int)(Math.random()*6) + 1; // baci drugu kocku
brojBacanja++; // uracunati bacanje
System.out.printf("%4d. bacanje: kocka1 = %d, kocka2 = %d\n",
brojBacanja, kocka1, kocka2);
} while ((kocka1 != 1) || (kocka2 != 1));}
}
import java.util.*;
public class Niz3n1 {
public static void main(String[] args) {
int n; // elementi niza
Scanner tastatura = new Scanner(System.in);
System.out.print("Unesite pocetni broj niza: ");
n = tastatura.nextInt();
while(n
7/28/2019 Osnove JAVA Programiranja Zbirka
168/318
System.out.println("mora biti pozitivan!");
System.out.print("Unesite pocetni broj niza: ");
n = tastatura.nextInt();
}
System.out.println();
System.out.println(n);
while(n != 1) {
if (n % 2 == 0)
n = n / 2;
else
n = 3 * n + 1 ;
System.out.println(n);}
}
}
import java.util.*;
public class NZD1 {
public static void main(String[] args) {
int x, y; // dati brojevi
int d; // (najveci) zajednicki delilac
Scanner tastatura = new Scanner(System.in);
System.out.print("Unesite dva pozitivna cela broja: ");
x = tastatura.nextInt();
y = tastatura.nextInt();
d = x < y ? x : y; // po cetni delilac
while((x % d != 0) || (y % d != 0))
d = d - 1 ;
System.out.println("NZD(" + x + "," + y + ") = " + d);
}
}
7/28/2019 Osnove JAVA Programiranja Zbirka
169/318
import java.util.*;
/** Program prikazuje broj sa najvecim brojem delioca u
intervalu od 1 do n */
public class NBD {
public static void main(String[] args) {
int brojSaNBD = 1; // broj sa najvecim brojem delioca
int maxBrojDelioca = 1; // njegov najveci broj delioca
int brojDelioca; // broj delioca aktuelnog broja
Scanner tastatura = new Scanner(System.in);
System.out.println(
"Unesite gornju granicu intervala brojeva (vecu od 1)");
System.out.print(
"u kojem se trai broj sa najvecim brojem delioca: ");
int n = tastatura.n