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Java 如何禁用JPanel的自动重新调整大小？

java swing

Java 如何禁用JPanel的自动重新调整大小？,java,swing,jframe,jpanel,jlabel,Java,Swing,Jframe,Jpanel,Jlabel,我正在开发一个JavaJ2SE（测试，只是为了知识）应用程序。这里我要做的是在主面板上添加5个子面板。然后给它们分配不同的颜色，然后我必须给它们分配带有彩色框图像的JLabel。仅通过使用Random类，我就必须在子面板中随机设置带有图像的可见JLabel 问题 问题是，每当我添加带有图像的JLabel时，子面板将自动重新调整大小。我怎样才能克服这个问题？我搜索了很多，但没有知道如何解决这个问题 我一直在尝试的我使用了不同的布局管理器，但没有成功 我的代码 import java.

我正在开发一个JavaJ2SE（测试，只是为了知识）应用程序。这里我要做的是在主面板上添加5个子面板。然后给它们分配不同的颜色，然后我必须给它们分配带有彩色框图像的JLabel。仅通过使用Random类，我就必须在子面板中随机设置带有图像的可见JLabel

问题 问题是，每当我添加带有图像的JLabel时，子面板将自动重新调整大小。我怎样才能克服这个问题？我搜索了很多，但没有知道如何解决这个问题

我一直在尝试的我使用了不同的布局管理器，但没有成功

我的代码

      import java.util.Random;
      import java.util.logging.Level;
      import java.util.logging.Logger;
      import javax.swing.JLabel;



     public class PanelMovement extends javax.swing.JFrame {


    public PanelMovement() {
        initComponents();
        Thread t=new Thread(new RunThread());
        t.start();
        a.setVisible(false);
        b.setVisible(false);
        c.setVisible(false);
        d.setVisible(false);
        e.setVisible(false);
    }


    private void initComponents() {

        mainpanel = new javax.swing.JPanel();
        green = new javax.swing.JPanel();
        a = new javax.swing.JLabel();
        blue = new javax.swing.JPanel();
        b = new javax.swing.JLabel();
        black = new javax.swing.JPanel();
        c = new javax.swing.JLabel();
        white = new javax.swing.JPanel();
        d = new javax.swing.JLabel();
        yellow = new javax.swing.JPanel();
        e = new javax.swing.JLabel();
        tt = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setResizable(false);

        mainpanel.setBackground(new java.awt.Color(255, 255, 255));

        green.setBackground(new java.awt.Color(51, 255, 0));
        green.setMinimumSize(new java.awt.Dimension(97, 122));

        a.setIcon(new javax.swing.ImageIcon(getClass().getResource("/2.png"))); // NOI18N
        a.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                aMouseClicked(evt);
            }
        });

        javax.swing.GroupLayout greenLayout = new javax.swing.GroupLayout(green);
        green.setLayout(greenLayout);
        greenLayout.setHorizontalGroup(
            greenLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(greenLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(a)
                .addContainerGap(31, Short.MAX_VALUE))
        );
        greenLayout.setVerticalGroup(
            greenLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(greenLayout.createSequentialGroup()
                .addGap(25, 25, 25)
                .addComponent(a)
                .addContainerGap(61, Short.MAX_VALUE))
        );

        blue.setBackground(new java.awt.Color(0, 0, 204));

        b.setIcon(new javax.swing.ImageIcon(getClass().getResource("/5.jpg"))); // NOI18N
        b.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                bMouseClicked(evt);
            }
        });

        javax.swing.GroupLayout blueLayout = new javax.swing.GroupLayout(blue);
        blue.setLayout(blueLayout);
        blueLayout.setHorizontalGroup(
            blueLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(blueLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(b)
                .addContainerGap(31, Short.MAX_VALUE))
        );
        blueLayout.setVerticalGroup(
            blueLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(blueLayout.createSequentialGroup()
                .addGap(25, 25, 25)
                .addComponent(b)
                .addContainerGap(61, Short.MAX_VALUE))
        );

        black.setBackground(new java.awt.Color(0, 0, 0));

        c.setForeground(new java.awt.Color(255, 255, 255));
        c.setIcon(new javax.swing.ImageIcon(getClass().getResource("/3.jpg"))); // NOI18N
        c.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                cMouseClicked(evt);
            }
        });

        javax.swing.GroupLayout blackLayout = new javax.swing.GroupLayout(black);
        black.setLayout(blackLayout);
        blackLayout.setHorizontalGroup(
            blackLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(blackLayout.createSequentialGroup()
                .addGap(30, 30, 30)
                .addComponent(c)
                .addContainerGap(11, Short.MAX_VALUE))
        );
        blackLayout.setVerticalGroup(
            blackLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, blackLayout.createSequentialGroup()
                .addContainerGap(46, Short.MAX_VALUE)
                .addComponent(c)
                .addGap(40, 40, 40))
        );

        white.setBackground(new java.awt.Color(0, 255, 255));

        d.setIcon(new javax.swing.ImageIcon(getClass().getResource("/1.png"))); // NOI18N
        d.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                dMouseClicked(evt);
            }
        });

        javax.swing.GroupLayout whiteLayout = new javax.swing.GroupLayout(white);
        white.setLayout(whiteLayout);
        whiteLayout.setHorizontalGroup(
            whiteLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(whiteLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(d)
                .addContainerGap(31, Short.MAX_VALUE))
        );
        whiteLayout.setVerticalGroup(
            whiteLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, whiteLayout.createSequentialGroup()
                .addContainerGap(61, Short.MAX_VALUE)
                .addComponent(d)
                .addGap(25, 25, 25))
        );

        yellow.setBackground(new java.awt.Color(255, 255, 0));

        e.setIcon(new javax.swing.ImageIcon(getClass().getResource("/4.jpg"))); // NOI18N
        e.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                eMouseClicked(evt);
            }
        });

        javax.swing.GroupLayout yellowLayout = new javax.swing.GroupLayout(yellow);
        yellow.setLayout(yellowLayout);
        yellowLayout.setHorizontalGroup(
            yellowLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, yellowLayout.createSequentialGroup()
                .addContainerGap(22, Short.MAX_VALUE)
                .addComponent(e)
                .addGap(19, 19, 19))
        );
        yellowLayout.setVerticalGroup(
            yellowLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, yellowLayout.createSequentialGroup()
                .addContainerGap(46, Short.MAX_VALUE)
                .addComponent(e)
                .addGap(40, 40, 40))
        );

        jLabel1.setText("Score=");

        javax.swing.GroupLayout mainpanelLayout = new javax.swing.GroupLayout(mainpanel);
        mainpanel.setLayout(mainpanelLayout);
        mainpanelLayout.setHorizontalGroup(
            mainpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainpanelLayout.createSequentialGroup()
                .addGap(199, 199, 199)
                .addComponent(jLabel1)
                .addGap(18, 18, 18)
                .addComponent(tt, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, mainpanelLayout.createSequentialGroup()
                .addGap(78, 78, 78)
                .addComponent(green, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(67, 67, 67)
                .addComponent(blue, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(50, 50, 50)
                .addComponent(black, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 70, Short.MAX_VALUE)
                .addComponent(white, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(43, 43, 43)
                .addComponent(yellow, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        mainpanelLayout.setVerticalGroup(
            mainpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainpanelLayout.createSequentialGroup()
                .addGap(131, 131, 131)
                .addGroup(mainpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(yellow, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(black, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(blue, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(green, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(white, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 115, Short.MAX_VALUE)
                .addGroup(mainpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(tt, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1))
                .addGap(44, 44, 44))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(mainpanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(mainpanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                        
     int count=0;
    private void aMouseClicked(java.awt.event.MouseEvent evt) {                               
        count+=1;
        tt.setText(Integer.toString(count));
    }                              

    private void bMouseClicked(java.awt.event.MouseEvent evt) {                               
        count+=1;
        tt.setText(Integer.toString(count));
    }                              

    private void cMouseClicked(java.awt.event.MouseEvent evt) {                               
      count+=1;
        tt.setText(Integer.toString(count));
    }                              

    private void dMouseClicked(java.awt.event.MouseEvent evt) {                               
     count+=1;
        tt.setText(Integer.toString(count));
    }                              

    private void eMouseClicked(java.awt.event.MouseEvent evt) {                               
        count+=1;
        tt.setText(Integer.toString(count));
    }                              
    private class RunThread implements Runnable{
    Random randomGenerator = new Random();



    public void run(){
        boolean flag=true;
            while(flag){
                int  RandomBox = randomGenerator.nextInt(5)+1;

                try{
                    Thread.currentThread().sleep(1000);
                }catch(Exception e){

                }
      if(RandomBox==1){
         a.setVisible(true);
                    try {
                        Thread.currentThread().sleep(300);
                          a.setVisible(false);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(PanelMovement.class.getName()).log(Level.SEVERE, null, ex);
                    }


      }
      else if(RandomBox==2){
          b.setVisible(true);
          try {
                        Thread.currentThread().sleep(300);
                          b.setVisible(false);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(PanelMovement.class.getName()).log(Level.SEVERE, null, ex);
                    }
      }
      else if(RandomBox==3){
          c.setVisible(true);
          try {
                        Thread.currentThread().sleep(300);
                          c.setVisible(false);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(PanelMovement.class.getName()).log(Level.SEVERE, null, ex);
                    }
      }
      else if(RandomBox==4){
          d.setVisible(true);
          try {
                        Thread.currentThread().sleep(300);
                          d.setVisible(false);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(PanelMovement.class.getName()).log(Level.SEVERE, null, ex);
                    }
      }
      else if(RandomBox==5){
        e.setVisible(true);
        try {
                        Thread.currentThread().sleep(300);
                          e.setVisible(false);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(PanelMovement.class.getName()).log(Level.SEVERE, null, ex);
                    }
    }

    }
            }


}
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(PanelMovement.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(PanelMovement.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(PanelMovement.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(PanelMovement.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new PanelMovement().setVisible(true);
                new PanelMovement().pack();
            }
        });
    }
    // Variables declaration - do not modify                     
    private javax.swing.JLabel a;
    private javax.swing.JLabel b;
    private javax.swing.JPanel black;
    private javax.swing.JPanel blue;
    private javax.swing.JLabel c;
    private javax.swing.JLabel d;
    private javax.swing.JLabel e;
    private javax.swing.JPanel green;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel mainpanel;
    private javax.swing.JTextField tt;
    private javax.swing.JPanel white;
    private javax.swing.JPanel yellow;
    // End of variables declaration                   
}

import java.util.Random；
导入java.util.logging.Level；
导入java.util.logging.Logger；
导入javax.swing.JLabel；
公共类PanelMovement扩展了javax.swing.JFrame{
公共小组运动（）{
初始化组件（）；
线程t=新线程（新RunThread（））；
t、 start（）；
a、 setVisible（假）；
b、 setVisible（假）；
c、 setVisible（假）；
d、 setVisible（假）；
e、 setVisible（假）；
}
私有组件（）{
mainpanel=newjavax.swing.JPanel（）；
green=newjavax.swing.JPanel（）；
a=newjavax.swing.JLabel（）；
blue=newjavax.swing.JPanel（）；
b=newjavax.swing.JLabel（）；
black=newjavax.swing.JPanel（）；
c=newjavax.swing.JLabel（）；
white=newjavax.swing.JPanel（）；
d=newjavax.swing.JLabel（）；
黄色=newjavax.swing.JPanel（）；
e=newjavax.swing.JLabel（）；
tt=newjavax.swing.JTextField（）；
jLabel1=newjavax.swing.JLabel（）；
setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）；
可设置大小（假）；
setBackground（新java.awt.Color（255、255、255））；
green.setBackground（新java.awt.Color（51255,0））；
green.setMinimumSize（新java.awt.Dimension（97122））；
a、 setIcon（新的javax.swing.ImageIcon（getClass（）.getResource（“/2.png”））；//NOI18N
a、 addMouseListener（新java.awt.event.MouseAdapter（）{
public void mouseClicked（java.awt.event.MouseEvent evt）{
阿莫西（evt）；
}
});
javax.swing.GroupLayout-greenLayout=新的javax.swing.GroupLayout（绿色）；
绿色。设置布局（绿色布局）；
greenLayout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（greenLayout.createSequentialGroup（）
.addContainerGap（）
.addComponent（a）
.addContainerGap（31，简称最大值））
);
greenLayout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（greenLayout.createSequentialGroup（）
.addGap（25,25,25）
.addComponent（a）
.addContainerGap（61，简称最大值））
);
blue.setBackground（新java.awt.Color（0,0204））；
b、 setIcon（新的javax.swing.ImageIcon（getClass（）.getResource（“/5.jpg”））；//NOI18N
b、 addMouseListener（新java.awt.event.MouseAdapter（）{
public void mouseClicked（java.awt.event.MouseEvent evt）{
bmt（evt）；
}
});
javax.swing.GroupLayout blueLayout=新的javax.swing.GroupLayout（蓝色）；
blue.setLayout（blueLayout）；
blueLayout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（blueLayout.createSequentialGroup（）
.addContainerGap（）
.addComponent（b）
.addContainerGap（31，简称最大值））
);
blueLayout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（blueLayout.createSequentialGroup（）
.addGap（25,25,25）
.addComponent（b）
.addContainerGap（61，简称最大值））
);
black.setBackground（新java.awt.Color（0,0,0））；
c、 set前台（新java.awt.Color（255、255、255））；
c、 setIcon（新的javax.swing.ImageIcon（getClass（）.getResource（“/3.jpg”））；//NOI18N
c、 addMouseListener（新java.awt.event.MouseAdapter（）{
public void mouseClicked（java.awt.event.MouseEvent evt）{
CMT（evt）；
}
});
javax.swing.GroupLayout blackLayout=新的javax.swing.GroupLayout（黑色）；
black.setLayout（blackLayout）；
blackLayout.setHorizontalGroup(
blackLayout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（blackLayout.createSequentialGroup（）
.addGap（30,30,30）
.addComponent（c）
.addContainerGap（11，简称最大值））
);
blackLayout.setVerticalGroup(
blackLayout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（javax.swing.GroupLayout.Alignment.TRAILING，blackLayout.createSequentialGroup（）
.addContainerGap（46，简称最大值）
.addComponent（c）
.addGap（40,40,40））
);
setBackground（新java.awt.Color（0255255））；
d、 setIcon（新的javax.swing.ImageIcon（getClass（）.getResource（“/1.png”））；//NOI18N
d、 addMouseListener（新java.awt.event.MouseAdapter（）{
public void mouseClicked（java.awt.event.MouseEvent evt）{
dmt（evt）；
}
});
javax.swing.GroupLayout-whiteLayout=新的javax.swing.GroupLayout（白色）；
白色。设置布局（白色布局）；
whiteLayout.setHorizontalGroup(
丝毫

     import java.util.Random;
     import java.util.logging.Level;
     import java.util.logging.Logger;


    public class Panel extends javax.swing.JFrame {


    public Panel() {
        initComponents();
        a.setVisible(false);
        b.setVisible(false);
        c.setVisible(false);
        d.setVisible(false);
        e.setVisible(false);

        Thread t=new Thread(new RunThread());
        t.start();
    }


    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        b = new javax.swing.JLabel();
        c = new javax.swing.JLabel();
        e = new javax.swing.JLabel();
        a = new javax.swing.JLabel();
        d = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        b.setIcon(new javax.swing.ImageIcon(getClass().getResource("/2.png"))); // NOI18N

        c.setIcon(new javax.swing.ImageIcon(getClass().getResource("/1.png"))); // NOI18N

        e.setIcon(new javax.swing.ImageIcon(getClass().getResource("/4.jpg"))); // NOI18N

        a.setIcon(new javax.swing.ImageIcon(getClass().getResource("/4.jpg"))); // NOI18N

        d.setIcon(new javax.swing.ImageIcon(getClass().getResource("/3.jpg"))); // NOI18N

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(b))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(294, 294, 294)
                        .addComponent(c))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(92, 92, 92)
                        .addComponent(a)))
                .addContainerGap(283, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGap(0, 0, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addComponent(e)
                        .addGap(34, 34, 34))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addComponent(d)
                        .addGap(104, 104, 104))))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(50, 50, 50)
                .addComponent(b)
                .addGap(39, 39, 39)
                .addComponent(d)
                .addGap(32, 32, 32)
                .addComponent(c)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 44, Short.MAX_VALUE)
                .addComponent(a)
                .addGap(5, 5, 5)
                .addComponent(e)
                .addGap(121, 121, 121))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

        pack();
    }                       
    private class RunThread implements Runnable{
    Random randomGenerator = new Random();



    public void run(){
        int i;


       try{

           while(!Thread.currentThread().isInterrupted()){

                 boolean flag=true;
            while(flag){
                int  RandomBox = randomGenerator.nextInt(5)+1;

                try{
                    Thread.currentThread().sleep(1000);
                }catch(Exception e){

                }
      if(RandomBox==1){
         a.setVisible(true);
                    try {
                        Thread.currentThread().sleep(1000);
                          a.setVisible(false);
                    } catch (InterruptedException ex) {

                    }


      }
      else if(RandomBox==2){
          b.setVisible(true);
          try {
                        Thread.currentThread().sleep(1000);
                          b.setVisible(false);
                    } catch (InterruptedException ex) {

                    }
      }
      else if(RandomBox==3){
          c.setVisible(true);
          try {
                        Thread.currentThread().sleep(1000);
                          c.setVisible(false);
                    } catch (InterruptedException ex) {

                    }
      }
      else if(RandomBox==4){
          d.setVisible(true);
          try {
                        Thread.currentThread().sleep(1000);
                          d.setVisible(false);
                    } catch (InterruptedException ex) {

                    }
      }
      else if(RandomBox==5){
        e.setVisible(true);
        try {
                        Thread.currentThread().sleep(1000);
                          e.setVisible(false);
                    } catch (InterruptedException ex) {

                    }
    }

    }

        }


       }catch(Exception e){

       }

    }
}
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Panel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Panel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Panel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Panel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Panel().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify                     
    private javax.swing.JLabel a;
    private javax.swing.JLabel b;
    private javax.swing.JLabel c;
    private javax.swing.JLabel d;
    private javax.swing.JLabel e;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration                   
    }