Wait until child threads completed : Java

Question

Problem description : -

Step 1: Take input FILE_NAME from user at main thread.

Step 2: Perform 10 operations on

Answer 1

In Java 8 a far better approach is to use parallelStream()

Note: it is far easier to see exactly what these background tasks are doing.

public static void main(String[] args) {
    Stream.of(
         () -> mytest.result.setIntValue(346635),
         () -> mytest.result.setStringValue("Hello hi"),
         () -> mytest.result.setBoolValue(true) )
         .parallel()
         .forEach(Runnable::run);

    System.out.println("main finished");
    System.out.println("Result is : " + mytest.result.toString());
}

I took out the debug information and the sleep as these don't alter the outcome.