Write a Thread join() program

Write a Thread join() program

Program

class ThDemo  extends Thread
{
    public void run()  
    {    
        int x;
        for(x=1;x<=3;x++)
        {
            try
            {
                Thread.sleep(2000);
                System.out.println(x);
            }
            catch(Exception e)
            {
                System.out.println(e);
            }
        }
    }   
    
}
public class Main
{
    public static void main(String args[])
    {
        ThDemo d1=new ThDemo();
        ThDemo d2=new ThDemo();
        ThDemo d3=new ThDemo();
        d1.start();
        try
        {
            System.out.println("Current Thread: "+ Thread.currentThread().getName()); 
            d1.join(); 
        } 
        catch(Exception e)
        {
            System.out.println(e);
        }
        d2.start();
        try
        { 
            System.out.println("Current Thread: "+ Thread.currentThread().getName()); 
            d2.join(); 
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
        d3.start();
        try
        { 
            System.out.println("Current Thread: "+ Thread.currentThread().getName()); 
            d3.join(); 
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }
}

Current Thread: main
1
2
3
Current Thread: main
1
2
3
Current Thread: main
1
2
3

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