framewithjpopupmenu.java

初学的好东西值得一看看欢迎下载观看使用

import javax.swing.JFrame;
import java.awt.FlowLayout;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JPopupMenu;
import javax.swing.JMenuItem;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
class FrameWithJPopupMenu extends JFrame implements MouseListener,ActionListener{
	FlowLayout flowLayout1=new FlowLayout();
	JLabel jLabel1=new JLabel("发文部门:");
	JTextField jTextField1=new JTextField(20);
	JPopupMenu jPopupMenu1=new JPopupMenu();
	JMenuItem jMenuItem1=new JMenuItem("默认值");
	JMenuItem jMenuItem2=new JMenuItem("清空文本");
	FrameWithJPopupMenu(){
		super("弹出菜单示例");
		setSize(300,170);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		getContentPane().setLayout(flowLayout1);
		getContentPane().add(jLabel1);
		getContentPane().add(jTextField1);
		//
		jPopupMenu1.add(jMenuItem1);
		jPopupMenu1.addSeparator();
		jPopupMenu1.add(jMenuItem2);
		jPopupMenu1.setInvoker(jTextField1);
		jTextField1.addMouseListener(this);
		jMenuItem1.addActionListener(this);
		jMenuItem2.addActionListener(this);
		show();
	}
	public void mousePressed(MouseEvent e){
		if(e.getModifiers()==MouseEvent.META_MASK)
			jPopupMenu1.show(jTextField1,e.getX(),e.getY());
	}
	public void mouseClicked(MouseEvent e){}
	public void mouseEntered(MouseEvent e){}
	public void mouseExited(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}

	public void actionPerformed(ActionEvent e){
		if(e.getSource()==jMenuItem1)
			jTextField1.setText("办公室");
		else
			jTextField1.setText("");
	}
	
	public static void main(String[] args){
		FrameWithJPopupMenu frame1=new FrameWithJPopupMenu();
	}
}