java - Search same colors (RGB) in same position (i, j) from different arrays (3 array) and lock it -

i made simple learning program create 3 array, put jpanel it, , give random color each (each array have own "randomizer" jtogglebutton)

for learning continuation, thinking of creating 1 more button search same colors in same position arrays array1 [0][0] (r, g, b) = array2 [0][0] (r, g, b), , lock it (so loop can't revalidate color).

my questions are:

1. is possible lock position of array array [0][9]?
2. i think should make randomizing loops synchronize first, methodically right?
3. if possible, should start build it?
4. it not question but, please give me instigation if make unnecessary "// copy method" except jtogglebuttons.

p.s. question how check 2 array list same content in same position, maybe next step method, others in different language , don't think has same issue.

the code:

main:

public class main {      private static void createmainframe() {         new window().initmainframe();     }      @suppresswarnings("convert2lambda")     public static void main (string [] args) {         swingutilities.invokelater (new runnable() {             @override             public void run() {                 createmainframe();             }         });     } } 

window:

public class window {      public void initmainframe() {         container container = mainframe.getcontentpane();         container.setlayout(null);     }      private static void createblocks1() {         new blocks().initblocks1();     }     // createblocks2     // createblocks3      public static jframe mainframe = new jframe("learning 43");     public static jpanel viewerboard1 = new jpanel();     // viewerboard2     // viewerboard3      public static jtogglebutton randomize1 = new jtogglebutton("randomizer");     // randomize2     // randomize3      @suppresswarnings("convert2lambda")     public window() {         initmainframe();         mainframe.setsize(676,357);         mainframe.setlocationrelativeto(null);         mainframe.setresizable(false);         mainframe.setalwaysontop(true);         mainframe.setdefaultcloseoperation(jframe.exit_on_close);         mainframe.setvisible(true);          mainframe.add(viewerboard1);         viewerboard1.setbounds(15, 15, 200, 200);         viewerboard1.setbackground(new color(222, 222, 222));         viewerboard1.setvisible(true);         // viewerboard2         // viewerboard3          jpanel viewerpanel1 = new jpanel();         mainframe.add(viewerpanel1);         viewerpanel1.setbounds(10, 10, 210, 210);         viewerpanel1.setbackground(new color(111, 111, 111));         viewerpanel1.setborder(borderfactory.createbevelborder(bevelborder.lowered));         viewerpanel1.setvisible(true);         // viewerpanel2         // viewerpanel3          mainframe.add(randomize1);         randomize1.setfocuspainted(false);         randomize1.setrolloverenabled(true);         randomize1.setforeground(color.gray);         randomize1.setfont(new font("courier", font.bold, 16));         randomize1.setmargin(new insets(0, 0, 0, 0));         randomize1.setbounds(10, 230, 210, 90);         randomize1.setvisible(true);         randomize1.additemlistener(new itemlistener() {             @override             public void itemstatechanged(itemevent randomevent) {                 if (randomevent.getstatechange() == itemevent.selected){                     system.out.println("randomize button 1 selected: " + randomize1.isselected());                     system.out.println("randomizing panel 1...");                     while (randomize1.isselected()) {                         createblocks1();                         break;                     }                 }                 if (randomevent.getstatechange() == itemevent.deselected){                     system.out.println("randomize button 1 deselcted!");                     system.out.println("eraseing panel 1...");                     viewerboard1.removeall();                     viewerboard1.revalidate();                     viewerboard1.repaint();                 }             }         });         // randomize2         // randomize3     } } 

blocks:

public class blocks {      public void initblocks1() {         blockthread1 thread1 = new blockthread1();         thread1.start();     }     // initblocks2     // initblocks3      container container = window.viewerboard1;     jpanel [][] blocksarray1 = new jpanel[4][4];     jpanel colspanel;     jpanel rowspanel;     random random1 = new random();     private color rcolor1() {         return new color(random1.nextint(255), random1.nextint(255), random1.nextint(255)/*, random.nextint(255)*/);     }     class blockthread1 extends thread {         @override         public void run(){             container.setlayout(new gridlayout(4, 4));             {                 try {                     (int cols1 = 0; cols1 < blocksarray1.length; cols1++) {                         colspanel = new jpanel();                         colspanel.setbackground(rcolor1());                         window.viewerboard1.revalidate();                         window.viewerboard1.add(colspanel);                          (int rows1 = 1; rows1 < blocksarray1[cols1].length; rows1++) {                             rowspanel = new jpanel();                             rowspanel.setbackground(rcolor1());                             window.viewerboard1.revalidate();                             window.viewerboard1.add(rowspanel);                         }                     }                     thread.sleep(1000);                     window.viewerboard1.removeall();                     window.viewerboard1.revalidate();                     window.viewerboard1.repaint();                 }                 catch (interruptedexception ex) {                     java.util.logging.logger.getlogger(window.class.getname()).log(java.util.logging.level.severe, null, ex);                 }             } while (window.randomize1.isselected());         }     }     // blocksarray2     // blocksarray3 }