example9_1.java

200多个自己编的java程序,大家可以学一下.

import java.awt.*;
import java.awt.event.*;

class Example9_1 extends WindowAdapter implements ActionListener
{
	Frame f;
	private Button bClear;
	private Button bCopy;
	private Button bClose;
	TextField tfs,tft;
	String ad="How are you";
	Label lSource;
	Label lTarget;
	Label lSpace1;
	Label lSpace2;

	/**
	 * Method go
	 *
	 *
	 */
	public void go() {
		// TODO: Add your code here
		
		f=new Frame("My Frame");
		f.setLayout(new GridLayout(6,1,10,10));
		// the last two i s gap
		f.setSize(350,350);
		lSource=new Label("source");
		lTarget=new Label("Target");
		lSpace1=new Label();
		lSpace2=new Label();
		tfs=new TextField(ad,15);
		tft=new TextField(15);
		Panel p1=new Panel();
		Panel p2=new Panel();
		Panel p3=new Panel();
		p3.setLayout(new FlowLayout(FlowLayout.CENTER,40,0));
		p1.setSize(100,50);
		p2.setSize(100,50);
		p3.setSize(100,50);
		p1.add(lSource);
		p1.add(tfs);
		p2.add(lTarget);
		p2.add(tft);
		
		bClear=new Button("clear");
		bCopy=new Button ("copy");
		bClose=new Button("close");
		bClear.addActionListener(this);
		bCopy.addActionListener(this);
		bClose.addActionListener(this);
		p3.add(bClear);
		p3.add(bCopy);
		p3.add(bClose);
		f.add(lSpace1);
		f.add(p1);
		f.add(p2);
		f.add(lSpace2);
		f.add(p3);
		
		f.addWindowListener(this);
		f.setVisible(true);
		
		
		
		
		
		
	}
	//to implement ActionListener's interface actionPerformed() method
	/**
	 * Method actionPerformed
	 *
	 *
	 */
	public void actionPerformed(ActionEvent e) {
		// TODO: Add your code here
		
		String sBlank="";
		if(e.getSource()==bClear)
		{
			tfs.setText(sBlank);
			tft.setText(sBlank);
		}
	
	if(e.getSource()==bCopy)
	{
	 tft.setText(tfs.getText());
	 	
	}
	
	if(e.getSource()==bClose)
	{
		System.exit(0);
		
	}
	}
	
	public void windowClosing(WindowEvent w){
		System.exit(0);
	}

	/**
	 * Method main
	 *
	 *
	 * @param args
	 *
	 */
	public static void main(String[] args) {
		// TODO: Add your code here
		
		Example9_1 be=new Example9_1();
		be.go();
		
	}
	

	
	  
	
	
	
}