Java thread - MCQ

Q) In java multi-threading, a thread can be created by

• Extending Thread class

• Implementing Runnable interface

• Using both

• None

Q) Which method is called internally by Thread start() method?

• execute()

• run()

• launch()

• main()

Q) What is maximum thread priority in Java

• 10

• 12

• 5

• 8

Q) Which method must be implemented by a Java thread?

• run()

• execute()

• start()

• None

Q) Number of threads in below java program is

public class ThreadExtended extends Thread {

public void run() {

System.out.println("\nThread is running now\n");

}

public static void main(String[] args) {

ThreadExtended threadE = new ThreadExtended();

threadE.start();

}

}

• 0

• 1

• 2

• 3

Q) Execution of a java thread begins on which method call?

• Start ()

• Run ()

• Execute ()

• Launch ()

Q) How many ways a thread can be created in Java multithreading?

• 1

• 2

• 3

• 4

Q) Which statements is/are correct (More than one is correct).

• On calling Thread start () method a new thread get created.

• Thread start () method call run () method internally

• Thread run () method can also be called directly to create thread.

• All correct

Q) Which method is used to make main thread to wait for all child threads

• Join ()

• Sleep ()

• Wait ()

• Stop ()

Q) Default value of a java thread is

• 0

• 1

• 5

• 10