#CustomThread.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson04.sub;

/**
 *
 * @author QTA
 */
public class CustomThread extends Thread{
    String name = "ABC";
    
    @Override
    public void run() {
        for (int i = 0; i < 30; i++) {
            System.out.println("T3 > " + i + ", name = " + name);
        }
    }
    
}

#Main.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson04.sub;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author QTA
 */
public class Main {
    public static void main(String[] args) {
        //Doan chuong trinh
        //Main Thread
        System.out.println("Start"); //Main thread
        try {
            Thread.sleep(1000);
        } catch (InterruptedException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
        //T1
        Thread t1 = new Thread(new Runnable() { //Main
            @Override
            public void run() {
                for (int i = 0; i < 20; i++) {
                    System.out.println("T1 > " + i);
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            }
        });
        t1.start();//Main & t1
//        try {
//            //        t1.stop();
//            t1.join();
//        } catch (InterruptedException ex) {
//            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
//        }

        //T2
        new Thread(new Runnable() { //Main & t1 => 
            @Override
            public void run() {
                for (int i = 0; i < 100; i++) {
                    System.out.println("T2 > " + i);
                }
            }
        }).start();//Main & t1 & t2
        try {
            //        t1.stop();
            t1.join();
        } catch (InterruptedException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        //T3
        CustomThread t3 = new CustomThread();//Main & t1 & t2
        t3.start(); //Main & t1, & t2 & t3
        
        System.out.println("End");
        
    }
}