PLASE HELP ME !! It is due Tomorrow ;( Make a JFrame with as many panels on it a

Question

PLASE HELP ME !! It is due Tomorrow ;(

Make a JFrame with as many panels on it as you want, with the JFrame using an Absolute layout. Write code that allows you to drag and drop the panels on the JFrame using a MouseMotionListener. It is okay if this motion is jittery, as making it smooth can be difficult. Further, make it so that clicking the panel will make the color change to a random color. Finally, make sure the panels have some kind of border around them (mine used beleved borders).

Bonus points (+2) will be given for smooth sliding and adding add/delete functionality for panels in a menu (+3)

Sample, pre and post drag/color change:

Explanation / Answer

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class Frames {

public static void main(String[] args) {
new Frames();
}

public Frames() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}

JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}

public class TestPane extends JPanel {

public TestPane() {
setLayout(null);
JPanel panel = new JPanel();
panel.setBackground(Color.RED);
panel.setSize(50, 50);
panel.setLocation(50, 50);
JPanel panel1 = new JPanel();
panel1.setBackground(Color.BLUE);
panel1.setSize(50, 50);
panel1.setLocation(100, 20);
add(panel);
add(panel1);
  
  
MouseAdapter ma = new MouseAdapter() {
private Point offset;
private Point clickPoint;
private JPanel clickedPanel;

@Override
               public void mouseClicked(MouseEvent e) {
                   // TODO Auto-generated method stub
   if(clickedPanel !=null)
                   clickedPanel.setBackground(Color.getHSBColor((float)Math.random(), (float)Math.random(), (float)Math.random()));
               }

               @Override
public void mousePressed(MouseEvent e) {
// Get the current clickPoint, this is used to determine if the
// mouseRelease event was part of a drag operation or not
clickPoint = e.getPoint();
// Determine if there is currently a selected panel or nor
if (clickedPanel != null) {
// Move the selected panel to a new location
moveSelectedPanelTo(e.getPoint());
// Reset all the other stuff we might other was have set eailer
offset = null;
clickedPanel = null;
} else {
// Other wise, find which component was clicked
findClickedComponent(e.getPoint());
}
}

@Override
public void mouseReleased(MouseEvent e) {
// Check to see if the current point is equal to the clickedPoint
// or not. If it is, then this is part of a "clicked" operation
// meaning that the selected panel should remain "selected", otherwise
// it's part of drag operation and should be discarded
if (!e.getPoint().equals(clickPoint)) {
clickedPanel = null;
}
clickPoint = null;
}

@Override
public void mouseDragged(MouseEvent e) {
// Drag the selected component to a new location...
if (clickedPanel != null) {
moveSelectedPanelTo(e.getPoint());
}
}

protected void findClickedComponent(Point p) {
Component comp = getComponentAt(p);
if (comp instanceof JPanel && !comp.equals(TestPane.this)) {
clickedPanel = (JPanel) comp;
int x = p.x - clickedPanel.getLocation().x;
int y = p.y - clickedPanel.getLocation().y;
offset = new Point(x, y);
}

}

private void moveSelectedPanelTo(Point p) {
if (clickedPanel != null) {
int x = p.x - offset.x;
int y = p.y - offset.y;
// System.out.println(x + "x" + y);
clickedPanel.setLocation(x, y);
}
}

};

addMouseListener(ma);
addMouseMotionListener(ma);
}

@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}

}

}

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