Please review this question. As sololearner app is keep on rejecting it n Don't down vote question, if you don't understand it.!

Question

What are possible outputs of following code.
Class MyThread extends Thread{
public void start(){
super.start();
System.out.print("S")
;

}
public void run(){
System.out.print("R");
}
}

class demo{
public static void main(String[] args){
MyThread t = new MyThread ();
t.start();
System. out.print("M");
}

}

answers are : SRM, SMR, RSM. but not MRS

Answer 1

The question is totally correct and , in fact interesting and it requires deep java knowledge to solve it.
unfortunately, questions are voted by the community, and a lot of people just did the the tutorial here so they can't know it:(.
I also got an question about generics (with extends and super and multiple types) restricted:(
As a result most challang question are just about solving loops and not about beeing a java expert with in depth knowledge of the library and features
like lamdas and generics.
your other question was also correct and interesting.

Answer 2

explanation:

there are 2 threads. main and t thread.
main will print both S n M. Where R is printed by t Thread only. So, M has to always follows S, may not be immediately. as t is a child thread to main, they will have same priorities. So, R may come before or after S or M. depends up on the JVM we use.

note :
please do observe that, here t.start() calls overriden start() method of MyThread class. which will be executed by main thread only. t thread will not be initiated until super.start() is executed.