frame1.java

使用java实现的可以任意添加和移动线段端点的小程序！

package controlline;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
//import com.borland.jbcl.layout.*;
import java.lang.*;

public class Frame1 extends JFrame {
  JPanel contentPane;
 Panel1 mypanel;
  BorderLayout borderLayout1 = new BorderLayout();
  //Construct the frame
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }

  }
  //Component initialization
  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(600, 400));
    this.setTitle("Frame Title");
    mypanel=new Panel1();
    mypanel.setBackground(Color.lightGray);
    mypanel.setForeground(Color.red);
    contentPane.add(mypanel, BorderLayout.CENTER);
   // this.add(mypanel,"center");
 /*  GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
   GraphicsDevice gd = ge.getDefaultScreenDevice();
  FullScreenWindow myWindow = new FullScreenWindow();
      if ( gd.isFullScreenSupported() )
        gd.setFullScreenWindow(myWindow);*/
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
}
/*class FullScreenWindow extends JWindow {
  public FullScreenWindow(){
    this.addMouseListener(new MouseAdapter(){
      public void mousePressed(MouseEvent evt){
        quit();
      }
    });
  }
  public void quit(){
    this.dispose();
  }
  public void paint(Graphics g) {
    g.setFont(new Font("Arial",Font.BOLD,30));
    g.setColor(Color.RED);
    g.drawString("这是全屏幕模式",100,100);
  }
}*/