multi threading in java

Question

Hello Everyone,

Please review this program and suggest. It is working as expected.

class Loader extends Thread {

public void run() {
System.out.println("in Loader program");
try{
Thread.sleep(1000);
System.out.println("end of Loader class");
}
catch(Exception e){
System.out.println("IE!");

}

}
}

class Loader1 implements Runnable {

public void run() {
System.out.println("in loader1 class");
System.out.println("end of loader1");
}

}
class MyClass {
public static void main(String[ ] args) {
Loader obj = new Loader();
System.out.println("Loader class object [obj] is created & calling start on obj of Loader class");
obj.start();
System.out.println("called start on obj of Loader class and it is in progress");
Thread obj1 = new Thread(new Loader1());
System.out.println("Loader1 object [obj1] is created and calling start menthod on obj1 of Loader1 class");
obj1.start();
System.out.println("called start on obj1 of Loader1 class and it is in progress");
}
}

output:

Loader class object [obj] is created & calling start on obj of Loader class
called start on obj of Loader class and it is in progress
Loader1 object [obj1] is created and calling start menthod on obj1 of Loader1 class
called start on obj1 of Loader1 class and it is in progress
in Loader program
in loader1 class
end of loader1
end of Loader class

Answer 1

It seems that the output is correct bro 👍.
I don't remember if sleep(long ms) is deprecated or not, because of the method wait().
But I think the correct way to call a Thread is

Runnable obj = new Loader() ;
Thread t = new Thread(obj) ;
t.start();