Multithreading

1. Thread(Runnable r, String name)
2. Thread()
3. Thread(int priority)
4. Thread(Runnable r, ThreadGroup g)

class MyThread extends Thread 
{
 public static void main(String[] args)
 {
  MyThread my = new MyThread();
  Thread t = new Thread(my);
  t.start();
 }
public void run()
{
 for(int i=0; i< 3; i++){
 System.out.println(i+"..");
} } }

public class Test implements Runnable
{
  public void run()
  {
    System.out.println("r1 ");
    System.out.println("r2 ");
  }
    
 public static void main( String[] args )
 {
    Thread t = new Thread(new Test()); 
    t.start();
    System.out.println("m1 ");
    t.join();
    System.out.println("m2 ");
 }
}

A situation where two or more threads are blocked forever and waiting for each other to release resources.