Java Tutorial: Thread Example

Two ways of Creating Thread

1. Extending from Thread class

• Extends a class from the Thread class
• Override the run( )
• Create an instance of the above class
• Start the Thread

/**

*

* @author paiman

*/

class DispThread extends Thread{

String msg;

public DispThread(String msg) {

this.msg = msg;

}

@Override

public void run(){

for(int i=0; i<5;i++){

System.out.println(msg);

}

}

}

/**

*

* @author paiman

*/

public class ThreadTest {

public static void main (String[]args){

DispThread dt1 = new DispThread("Thread");

DispThread dt2 = new DispThread("Example");

dt1.start();

dt2.start();

}

}

2. Implementing Runnable

• Implement Runnable on a class
• Implement the run( ) of the Runnable interface
• Create an instance of the above class
• Create a Thread object by passing the Runnable object as parameter
• Start the Thread

/**

*

* @author paiman

*/

public class DispThread2 implements Runnable{

String msg;

public DispThread2(String msg) {

this.msg = msg;

}

@Override

public void run(){

for(int i=0; i<5;i++){

System.out.println(msg);

}

}

}

/**

*

* @author paiman

*/

public class ThreadTest2 {

public static void main (String[]args){

DispThread2 dt1 = new DispThread2("Thread");

DispThread2 dt2 = new DispThread2("Example");

Thread t1 = new Thread(dt1);

Thread t2 = new Thread(dt2);

t1.start();

t2.start();

}

}