• Status: Solved
  • Priority: Medium
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This Jpanel isn't named how to here

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class MyClass4 extends JPanel {

  JLabel jLabel1;  
  ArrayList myArrayList = new ArrayList();

public MyClass4() {

     // Call it like this . . .
    jLabel = JLabel();

    setLayout(new GridLayout(0,3)); // Setting MY layout...
 
    add(jLabel1);  
    jLabel1.setText("Defensive Moves");
    setBackground(Color.white);

    looprow:
    for (int row=0; row<20; row++) {
    for(int col=0; col<3; col++) {
    int n=(20*col+row+1);
    if (n>50) break looprow;
    JCheckBox check = new JCheckBox("" + n);

    myArrayList.add(check);
    add(check);
    }
    }
}
}


 YourPanel.addMouseListener(new MouseAdapter() {
  public void mouseEntered(MouseEvent e) {
  YourPanel.setBackground(Color.blue);
  }
  public void mouseClicked(MouseEvent e) {
  YourPanel.setBackground(Color.red);
  }
  public void mouseExited(MouseEvent e) {
  YourPanel.setBackground(Color.white);
  }
  });
0
Drop_of_Rain
Asked:
Drop_of_Rain
1 Solution
 
JavatmCommented:
You need to use this :
 
  YourPanel.addMouseListener(new MouseAdapter() {
  public void mouseEntered(MouseEvent e) {
  YourPanel.setBackground(Color.blue);
  }
  public void mouseClicked(MouseEvent e) {
  YourPanel.setBackground(Color.red);
  }
  public void mouseExited(MouseEvent e) {
  YourPanel.setBackground(Color.white);
  }
  });

On the main program or the main JFrame on which you will
call your panel (MyClass) :

  MyClass4 x = new MyClass4();

  x.addMouseListener(new MouseAdapter() {
  public void mouseEntered(MouseEvent e) {
  YourPanel.setBackground(Color.blue);
  }
  public void mouseClicked(MouseEvent e) {
  YourPanel.setBackground(Color.red);
  }
  public void mouseExited(MouseEvent e) {
  YourPanel.setBackground(Color.white);
  }
  });

Hope that helps . . .
Javatm
0

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