appletthread.java

java关于线程的一些实例

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.applet.*;
public class AppletThread extends Applet implements ActionListener{
	JLabel l1,l2;
	static JTextField tf1,tf2;
	JPanel p;
	JButton b;
	static char[] ch={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
	public void init(){
		this.setLayout(new BorderLayout());
		l1=new JLabel("第一线程控制：26个字母从左到右显示");
		l2=new JLabel("第二线程控制：26个字母从右到左显示");
		tf1=new JTextField(26);
		tf2=new JTextField(26);
		tf2.setHorizontalAlignment(JTextField.RIGHT);
		b=new JButton("Start");
		p=new JPanel();
		p.setLayout(new GridLayout(5,1));
		p.add(l1);
		p.add(tf1);
		p.add(l2);
		p.add(tf2);
		this.add(p,"North");
		this.add(b,"South");
		b.addActionListener(this);
	}
	
	public void actionPerformed(ActionEvent e){
		ThreadDem1 td=new ThreadDem1();
		ThreadDem2 td1=new ThreadDem2();
		td.start();
		td1.start();
	}
}
class ThreadDem1 extends Thread{
	String str="";
	public void run(){
		for(int i=0;i<AppletThread.ch.length;i++){
			str=str+AppletThread.ch[i];
			AppletThread.tf1.setText(str);
			try{
				sleep(1000);
			}catch(InterruptedException e){}
		}
	}
}
class ThreadDem2 extends Thread{
	String str="";
	StringBuffer st;
	public void run(){
		for(int i=0;i<AppletThread.ch.length;i++){
			str=str+AppletThread.ch[i];
			st=new StringBuffer(str);
			
			AppletThread.tf2.setText(st.reverse().toString());
			try{
				sleep(1000);
			}catch(InterruptedException e){}
		}
	}
}