Osnove JAVA Programiranja Zbirka

7/28/2019 Osnove JAVA Programiranja Zbirka

1/318


2/318

500

978-86-7912-190-5


3/318


4/318


5/318


6/318


7/318


8/318


9/318

H

K

[email protected]


10/318


11/318


12/318


13/318

1

H

H

H

H

H

H

H

H

H

H

H


14/318

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H


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


16/318

H javac Test

H izvrsi Test

H java Test

H java Test.class

K

K

K

K

K


17/318

2

H

H

H

H

H

H

H

H

H

H

H

H


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 **


19/318

K

K

K

K

K

H

H

H

H


20/318


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


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


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


24/318


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;


26/318


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


28/318


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)


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


31/318


32/318

int


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


34/318


35/318


36/318


37/318

public class Test {


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 {


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) {


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;


39/318


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?


41/318


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);

}

}


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;

}


44/318


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


46/318


47/318

*

***

************

*********

***********

*********

*******

*****

***

*


48/318


49/318


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


51/318

H void

H return

H public

H static

return


int max = 0;

if (max != 0)

System.out.println(max);else

return;

}

H

H

Math.pow()


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


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 {


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


53/318

H

double

5

H double

H

int

H

xMetod()

public class Test {


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


54/318


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 {


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 {


rMetod(2);

}


56/318


57/318


58/318


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)


60/318


61/318


62/318


63/318

6

H

H

H

H

H

H

H

H

H method

H class

H main

H object


64/318

H

H

H

H

K

K

K void

K

K new

public class Test {


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


65/318

K

K A a =

new A(); main A a = new A("poruka");

public class Test {


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


66/318

public class Test {

int x;

public Test(String s) {

System.out.println("Test");

}


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


67/318

K

K

K

public class Test {


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");

}


Test t = new Test();

System.out.println(t.x);

}

}


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;


69/318


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;


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);



}

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


println

main


71/318

public class Test {

int i;

static int s;



System.out.println("t1.i je " + t1.i + ", t1.s is " + t1.s);





}

public Test() {

i++;

s++;

}

}






public class Test {


A a = new A();

a.n++;

}

}

class A {

int n;

private A() {

}

}

H

A


72/318

H

A

H n

H

b.n println

public class Test {


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


73/318

k

println

public class Test {


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;


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)


75/318

Calendar

GregorianCalendar java.util

Tacka Kvadrat Krug

Krug

KompleksanBroj

KompleksanBroj

main()

RimskiBroj

RimskiBroj

main()

KockaZaIgru

Brojac


76/318


77/318


78/318

K Math.random() * 100

K i + 10

K i + 6.5

public class Test {


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


79/318

public class Test {


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]

print

main

H i print

main

public class Test {


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 {


int[] lista1 = {1, 2, 3};


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 {


int[] lista1 = {1, 2, 3};

int[] lista2 = {1, 2, 3};

lista2 = lista1;lista1[0] = 0; lista1[1] = 1; lista2[2] = 2;



}

}

H 1 2 3

H 1 1 1

H 0 1 2

H 0 1 3

public class Test {


int[] x = {1, 2, 3, 4};

int[] y = x;


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 {


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 {


final int[] x = {1, 2, 3, 4};

int[] y = x;

x = new int[2];


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]);

}

}


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 {


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) {


a[i]++;

}


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 {


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];


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


85/318

public class Test {


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()


86/318


87/318

int[] lista2 = obrniNiz(lista1);



}

public int[] obrniNiz(int[] a) {

int[ ] b = new int[a.length];


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]


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 {


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


89/318


90/318

public class Test {


boolean[][] x = new boolean[3][];

x[0] = new boolean[1];



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


91/318


92/318


93/318


94/318


95/318

8

H

H

H

H

K

K

K A B A B

K A B A

B

K A B A

B


96/318


97/318

public class Test extends A {



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 {



}

}

class A extends B {

public A() {

System.out.println(

"Pozvan podrazumevani konstruktor klase A");

}

}


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 {


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;

}

}


99/318


100/318

public class Test {


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)


101/318


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 {


Object a1 = 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


103/318

public class Test {





}

}

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 {


A a 1 = new A();

A a 2 = new A();


}

}

class A {

int x;

public boolean equals(A a) {

return this.x == a.x;}

}

H a1.equals(a2)

Object

H true

H false


104/318

public class Test {


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 { }



C1 c1 = new C1();

C2 c2 = new C2();

C3 c3 = new C3();

C4 c4 = new C4();


105/318


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 { }


107/318

H class A { private A(){ } }

H final class A { }

H class A { protected A(){ } }


108/318

PovezanaLista

ElementListe PovezanaLista

equals()

PovezanaLista

PoliLinija

PovezanaLista


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"


110/318


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


112/318


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;


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


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


116/318

Karta

main()

Konverzije

Konvertor

PrenosnikUtakmice

Utakmica

Zapisnik Semafor

MobilniTelefon

PrenosnikUtakmice

GeometrijskiOblik

Uredaj

DaljinskiUpravljac

TV

DVDPlejer


117/318


118/318


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


120/318

K JFrame

K JComponent

import java.awt.*;

import javax.swing.*;

public class Test {


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.*;


public class Test {


JFrame okvir = new JFrame("Moj okvir");

okvir.add(new JButton("OK"));okvir.add(new JButton("Cancel"));


okvir.setSize(200, 200);


}

}

H OK


121/318

H

Cancel

H OK Cancel OK

Cancel

H OK Cancel OK

Cancel


public class Test {


JFrame okvir1 = new JFrame();

JFrame okvir2 = okvir1;

JFrame okvir3 = okvir2;

okvir1.setVisible( true);



}

}

H

H

H

H


public class Test extends JFrame {


JFrame okvir1 = new Test();

JFrame okvir2 = new Test();JFrame okvir3 = new Test();




}

}

H


122/318

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

okvir.setBounds(100, 150, 300, 200);


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());


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


125/318

import java.awt.*;



public Test() {

add(new MojaKomponenta("Zdravo narode!"));

}


JFrame okvir = new JFrame();okvir.setSize(300, 300);



}

}

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!")


126/318

import java.awt.*;



public Test() {

add(new MojaKomponenta());

}


JFrame okvir = new Test();


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


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)



128/318

K new Color(255, 255, 255)


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


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


130/318


131/318


132/318




}

}

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.*;



public Test() {


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");

}


JFrame okvir = new Test();




}

}


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.*;


public class Test extends OkvirRukovalac {


public Test() {

add(dugmeOK);

dugmeOK.addActionListener( this);

}


super.actionPerformed(e);

if (e.getSource() == dugmeOK)

System.out.println("Pritisnuto dugme OK");

}


OkvirRukovalac okvir = new Test();




}

}

class OkvirRukovalac extends JFrame implements ActionListener {


134/318

JButton dugmeNOK = new JButton("Nije OK");

public OkvirRukovalac() {

setLayout(new FlowLayout());

add(dugmeNOK);

dugmeNOK.addActionListener( this);

}


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


135/318


136/318


137/318


138/318


139/318

1

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H


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


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


142/318


143/318

2

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H


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


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


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


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


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


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);


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


152/318

H

H

H

H

H


153/318

public class ImePrezime {


System.out.println(" +----------------+");

System.out.println(" | |");

System.out.println(" | Dejan ivkovic |");

System.out.println(" | |");System.out.println(" +----------------+");

}

}

public class Inicijali {


System.out.println(" ** **");

System.out.println(" **");System.out.println(" ******* ************");

System.out.println(" ** ** **");







System.out.println(" ******* ************");

}

}

public class A4 {


final double CM_PO_INCU = 2.54;

double irinaPapira = 21.0;


154/318


155/318


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.print("Vreme izvravanja u sekundama je: ");

System.out.println(protekloVreme);}

}

import java.util.*;

public class Tren {


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


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);

}

}


158/318


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!


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 razlicite stringove

H


H s1 i s2 ukazuju na razlicite stringove

H



H



H


161/318




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


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


163/318


164/318

H

spetlja

H

upetlja

H

nastavak

H


165/318

import java.util.*;

public class Uskrs1 {



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 {



System.out.print("Unesite godinu za datum Uskrsa: ");

int g = tastatura.nextInt();

int a = g % 1 9 ;

int b = g % 4;


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 {


final int PISMO = 0;

int brojBacanja, ishodBacanja;

int brojPisma, brojGlava;


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 ");


167/318

System.out.printf("%8d %12d %17.2f %25.2f\n",

brojPisma, brojGlava,

(double)brojPisma/brojBacanja,

(double)brojGlava/brojBacanja);

}

}

}

public class ZmijskeOci {


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 {


int n; // elementi niza


System.out.print("Unesite pocetni broj niza: ");

n = tastatura.nextInt();

while(n


168/318

System.out.println("mora biti pozitivan!");

System.out.print("Unesite pocetni broj niza: ");

n = tastatura.nextInt();

}


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 {


int x, y; // dati brojevi

int d; // (najveci) zajednicki delilac


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);

}

}


169/318

import java.util.*;

/** Program prikazuje broj sa najvecim brojem delioca u

intervalu od 1 do n */

public class NBD {


int brojSaNBD = 1; // broj sa najvecim brojem delioca

int maxBrojDelioca = 1; // njegov najveci broj delioca

int brojDelioca; // broj delioca aktuelnog broja


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

Documents

Osnove JAVA Programiranja Zbirka