package edu.aic.swing.mycomponent;

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

public class DragPanelTest extends JFrame {

private static final long serialVersionUID = 1L;

private DragPanel myPanel;

public DragPanelTest() {
  // set up a SelfContainedPanel
  myPanel = new DragPanel();
  myPanel.setBackground(Color.WHITE);
  myPanel.setPreferredSize(new Dimension(400, 300));

  Container container = getContentPane();
  container.setLayout(new FlowLayout());
  container.add(myPanel);

  setSize(500, 350);
  setVisible(true);
}

public static void main(String args[]) {
  DragPanelTest application = new DragPanelTest();
  application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

}
上面这个程序是画圆的,要花长方形应该怎么改,最好还能实现画多个长方形...请高手指教。

package edu.aic.swing.mycomponent;

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

public class DragPanelTest extends JFrame {

private static final long serialVersionUID = 1L;

private DragPanel myPanel;

public DragPanelTest() {
  // set up a SelfContainedPanel
  myPanel = new DragPanel();
  myPanel.setBackground(Color.WHITE);
  myPanel.setPreferredSize(new Dimension(400, 300));

  Container container = getContentPane();
  container.setLayout(new FlowLayout());
  container.add(myPanel);

  setSize(500, 350);
  setVisible(true);
}

public static void main(String args[]) {
  DragPanelTest application = new DragPanelTest();
  application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

}
上面这个程序是画圆的,要花长方形应该怎么改,最好还能实现画多个长方形...请高手指教。