drjava - Java not realizing Int inside if has changed -

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my code supposed show slot machine type background there images in each lane not activated , when press spin randomizes ones visible , if not supposed visible set invisible. problem when press spin images not show up. when set them visible show up. believe when try set them visible in if/else statements.

import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; import java.awt.dimension; import javax.swing.imageicon;  public class slots1 extends jframe implements actionlistener {   jpanel panel;   jbutton spin;   int wheelone = 0;   jlabel imgslot1;   jlabel imgslot12;   jlabel imgslot13;   jlabel imgslot14;   jlabel imgslot15;   jlabel imgslot16;   jlabel imgslot17;    public slots1()   {     dimension screensize = toolkit.getdefaulttoolkit().getscreensize();     double width = screensize.getwidth();     double height = screensize.getheight();     int wid = (int) width;     int hgt = (int) height;      jframe frame = new jframe("sesame chicken");     frame.setsize(wid,hgt);     frame.setundecorated(true);     frame.setdefaultcloseoperation(jframe.exit_on_close);      panel = new jpanel(null);     panel.setbackground(color.gray);      imageicon pic = new imageicon("backr.png");     jlabel layout = new jlabel(pic);     layout.setlocation(0,0);     layout.setsize(1366,768);      imageicon slot1 = new imageicon("slu1.png");      imageicon slot2 = new imageicon("slu2.png");      imageicon slot3 = new imageicon("slu3.png");      imageicon slot4 = new imageicon("slu4.png");      imageicon slot5 = new imageicon("slu5.png");      imageicon slot6 = new imageicon("slu6.png");      imageicon slot7 = new imageicon("slu7.png");       imgslot1 = new jlabel(slot1);     imgslot1.setlocation(75,25);     imgslot1.setsize(150,500);     jlabel imgslot12 = new jlabel(slot2);     imgslot12.setlocation(75,25);     imgslot12.setsize(150,500);     jlabel imgslot13 = new jlabel(slot3);     imgslot13.setlocation(75,25);     imgslot13.setsize(150,500);     jlabel imgslot14 = new jlabel(slot4);     imgslot14.setlocation(75,25);     imgslot14.setsize(150,500);     jlabel imgslot15 = new jlabel(slot5);     imgslot15.setlocation(75,25);     imgslot15.setsize(150,500);     jlabel imgslot16 = new jlabel(slot6);     imgslot16.setlocation(75,25);     imgslot16.setsize(150,500);       jlabel imgslot17 = new jlabel(slot7);     imgslot17.setlocation(75,25);     imgslot17.setsize(150,500);      imgslot1.setvisible(false);     imgslot12.setvisible(false);     imgslot13.setvisible(false);     imgslot14.setvisible(false);     imgslot15.setvisible(false);     imgslot16.setvisible(false);     imgslot17.setvisible(false);      jbutton spin = new jbutton("spin");     spin.setsize(100,50);     spin.setlocation(100, 650);     spin.setbackground(color.green);     spin.setforeground(color.red);      panel.add(imgslot1);     panel.add(imgslot12);     panel.add(imgslot13);     panel.add(imgslot14);     panel.add(imgslot15);     panel.add(imgslot16);     panel.add(imgslot17);     panel.add(spin);     panel.add(layout);     frame.add(panel);      frame.setvisible(true);     panel.setvisible(true);      spin.addactionlistener(this);   }   public void actionperformed(actionevent e)    {     object source = e.getsource();     if (source == spin){       random rand = new random();       wheelone = rand.nextint(7);     }      if (wheelone == 1){       imgslot1.setvisible(true);}     else if (wheelone == 2){       imgslot12.setvisible(true);}     else if (wheelone == 3){       imgslot13.setvisible(true);}     else if ((wheelone == 4)){       imgslot14.setvisible(true);}     else if (wheelone == 5){       imgslot15.setvisible(true);}     else if (wheelone == 6){       imgslot16.setvisible(true);}     else if (wheelone == 7){       imgslot17.setvisible(true);}      if (wheelone != 1){       imgslot1.setvisible(false);}     if (wheelone != 2){       imgslot12.setvisible(false);}     if (wheelone != 3){       imgslot13.setvisible(false);}     if (wheelone != 4){       imgslot14.setvisible(false);}     if (wheelone != 5){       imgslot15.setvisible(false);}     if (wheelone != 6){       imgslot16.setvisible(false);}     if (wheelone != 7){       imgslot17.setvisible(false);}    }   public static void main(string[] args)   {     slots1 run = new slots1();   } }

this code ended with

import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; import java.awt.dimension; import javax.swing.imageicon;  public class slots1 extends jframe implements actionlistener {   jpanel panel;   jbutton spin;   jlabel imgslot1;   jlabel imgslot2;   jlabel imgslot3;   jlabel imgslot4;   jlabel imgslot5;   jlabel imgslot6;   jlabel imgslot7;   int wheelone = 1;   public slots1()   {     dimension screensize = toolkit.getdefaulttoolkit().getscreensize();     double width = screensize.getwidth();     double height = screensize.getheight();     int wid = (int) width;     int hgt = (int) height;      jframe frame = new jframe("sesame chicken");     frame.setsize(wid,hgt);     frame.setundecorated(true);     frame.setdefaultcloseoperation(jframe.exit_on_close);      panel = new jpanel(null);     panel.setbackground(color.gray);      imageicon pic = new imageicon("backr.png");     jlabel layout = new jlabel(pic);     layout.setlocation(0,0);     layout.setsize(1366,768);      imageicon slot1 = new imageicon("slu1.png");      imageicon slot2 = new imageicon("slu2.png");      imageicon slot3 = new imageicon("slu3.png");      imageicon slot4 = new imageicon("slu4.png");      imageicon slot5 = new imageicon("slu5.png");      imageicon slot6 = new imageicon("slu6.png");      imageicon slot7 = new imageicon("slu7.png");       imgslot1 = new jlabel(slot1);     imgslot1.setlocation(75,25);     imgslot1.setsize(150,500);     imgslot2 = new jlabel(slot2);     imgslot2.setlocation(75,25);     imgslot2.setsize(150,500);     imgslot3 = new jlabel(slot3);     imgslot3.setlocation(75,25);     imgslot3.setsize(150,500);     imgslot4 = new jlabel(slot4);     imgslot4.setlocation(75,25);     imgslot4.setsize(150,500);     imgslot5 = new jlabel(slot5);     imgslot5.setlocation(75,25);     imgslot5.setsize(150,500);     imgslot6 = new jlabel(slot6);     imgslot6.setlocation(75,25);     imgslot6.setsize(150,500);     imgslot7 = new jlabel(slot7);     imgslot7.setlocation(75,25);     imgslot7.setsize(150,500);      imgslot1.setvisible(false);     imgslot2.setvisible(false);     imgslot3.setvisible(false);     imgslot4.setvisible(false);     imgslot5.setvisible(false);     imgslot6.setvisible(false);     imgslot7.setvisible(false);      spin = new jbutton("spin");     spin.setsize(100,50);     spin.setlocation(100, 650);     spin.setbackground(color.green);     spin.setforeground(color.red);      panel.add(imgslot1);     panel.add(imgslot2);     panel.add(imgslot3);     panel.add(imgslot4);     panel.add(imgslot5);     panel.add(imgslot6);     panel.add(imgslot7);     panel.add(spin);     panel.add(layout);     frame.add(panel);      frame.setvisible(true);     panel.setvisible(true);      spin.addactionlistener(this);     system.out.println(spin);   }   public void actionperformed(actionevent e)    {     object source = e.getsource(); system.out.println(source); system.out.println(spin); system.out.println();     if (source.equals(spin)){     random rand = new random();     wheelone = rand.nextint(7);}      if (wheelone == 0){       imgslot1.setvisible(true);}     else if (wheelone != 0){     imgslot1.setvisible(false);}     if (wheelone == 1){     imgslot2.setvisible(true);}     else if (wheelone != 1){     imgslot2.setvisible(false);}     if (wheelone == 2){     imgslot3.setvisible(true);}     else if (wheelone != 2){     imgslot3.setvisible(false);}     if ((wheelone == 3)){     imgslot4.setvisible(true);}     else if (wheelone != 3){     imgslot4.setvisible(false);}     if (wheelone == 4){     imgslot5.setvisible(true);}     else if (wheelone != 4){     imgslot5.setvisible(false);}     if (wheelone == 5){     imgslot6.setvisible(true);}     else if (wheelone != 5){     imgslot6.setvisible(false);}     if (wheelone == 6){     imgslot7.setvisible(true);}     else if (wheelone != 6){       imgslot7.setvisible(false);}      }    public static void main(string[] args)   {     slots1 run = new slots1();   } }

the first problem how using random class. if instantiate again , again , call random.nextint(7), same value (probably 0).

instead need instantiate ones in constructor , assign instance variable.

the second problem nextint(7) doesn't return int value between 1 , 7 assume, returns int value between 0 , 6.


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