zuoye4.java

主要完成一些窗口的建立

/*
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/**
 *
 * @author ywt
 */
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.*;
import java.awt.event.*;
public class ZuoYe4 extends JFrame implements ActionListener{
    JMenuItem managemnue,check,Exit,red,blue,help;
    JMenu help1;
    JMenuBar jmb=new   JMenuBar();
    JTextArea text;
      public static void main(String[] args){
        ZuoYe4 frame=new  ZuoYe4();
        frame.setTitle("Mnue example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400,250);
        frame.setVisible(true);
    }
      public ZuoYe4(){
         Container container= getContentPane();
         container.setLayout(new BorderLayout());
         container.add(text=new JTextArea(""),BorderLayout.CENTER);
         setJMenuBar(jmb);
         JMenu managemnue=new JMenu("manage");
          jmb.add(managemnue);
          jmb.add(help1=new JMenu("help"));
          help1.add(help=new JMenuItem("help"));
          JMenu color=new JMenu("color");
          managemnue.add(color);
          color.add(red=new JMenuItem("red",'r'));
          color.add(new JMenuItem("blue",'b'));
          managemnue.add(new JCheckBoxMenuItem("check",true));
          managemnue.add(Exit=new JMenuItem("Exit",'E'));
      
         help.addActionListener(this);
        
      }
 public void actionPerformed(ActionEvent e){
     if(e.getSource() == help){
     text.append("这是帮助文档 有以下需要帮助的内容....... "+"\n");
     System.out.print("asdcas");
    }
       
 }
}