Oopj Quiz 5 IT - A

10 Questions | By Mujoopj | Last updated: Nov 21, 2018 | Total Attempts: 83

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1.

In Java, each thread has its own ________, in which it runs?
- A.
  
  Main() method
- B.
  
  JVM
- C.
  
  Call stack
- D.
  
  Memory
2.

In Java, by default every thread is given a _________.
- A.
  
  MIN_PRIORITY(0)
- B.
  
  NORM_PRIORITY(5)
- C.
  
  MAX_PRIORITY(10)
- D.
  
  HIGH_PRIORITY(7)
3.

What will happen if we call run() directly, without start() ?
- A.
  
  Program will give a compilation error.
- B.
  
  Nothing will happen both the methods are same.
- C.
  
  Runtime error.
- D.
  
  Thread won't be allocated a new call stack, and start running in the current call stack.
4.

Which two are valid constructors for Thread class ? 1. Thread(Runnable r, String name) 2. Thread() 3. Thread(int priority) 4. Thread(Runnable r, ThreadGroup g)
- A.
  
  1,2
- B.
  
  1,3
- C.
  
  2,3
- D.
  
  2,4
5.

What Exception is thrown when you start a thread twice ?
- A.
  
  InterruptedException
- B.
  
  NullPointerException
- C.
  
  IOException
- D.
  
  IllegalStateException
6.

Which class or interface defines the wait(), notify(), and notifyAll() methods
- A.
  
  Object
- B.
  
  Thread
- C.
  
  Runnable
- D.
  
  Class
7.

What is the Output of given code ? class MyThread extends Thread { public static void main(String[] args) { MyThread my = new MyThread(); Thread t = new Thread(my); t.start(); } public void run() { for(int i=0; i< 3; i++){ System.out.println(i+"..") } } }
- A.
  
  Compilation fails
- B.
  
  1..2..3..
- C.
  
  0..1..2..3
- D.
  
  0..1..2..
8.

Which of the following statement is not correct ?
- A.
  
  Thread is a light weight process.
- B.
  
  Sleep() is a non-static method simply used to put your thread on sleep.
- C.
  
  Sleep() is a static method simply used to put your thread on sleep.
- D.
  
  The notifyAll() method must be called from a synchronised context.
9.

What will be the Output of given code ? public class Test implements Runnable { public void run() { System.out.println("r1 "); System.out.println("r2 "); } public static void main( String[] args ) { Thread t = new Thread(new Test()); t.start(); System.out.println("m1 "); t.join(); System.out.println("m2 "); } }
- A.
  
  Compilation error.
- B.
  
  The output would be r1 r2 m1 m2
- C.
  
  The output would be m1 m2 r1 r2
- D.
  
  The output would be m1 r1 r2 m2
10.

Give One Word for ? A situation where two or more threads are blocked forever and waiting for each other to release resources.
- A.
  
  Critical Section
- B.
  
  Mutual Exclusion
- C.
  
  Deadlock
- D.
  
  Synchronization