Quiz  /  Java Gate & PSU MCQ Questions With Answers

  • 1. 
    Q) Which will contain the body of the thread in Java?

  • Start()
  • Run()
  • Main()
  • Execute()

  • 2. 
    The process by which objects of one class acquire the properties of objects of another class is known as

  • Polymorphism
  • Inheritance
  • Data Hiding
  • Association

  • 3. 
    In Java WORA stands for

  • Write Once Recall Anywhere
  • Write Once Return Anywhere
  • Write Once Read Anywhere
  • Write Once Run Anywhere

  • 4. 
    What will be the output?

  • Finally
  • Compilation fails
  • The code runs with no output
  • An exception is thrown at runtime

  • 5. 
    Which from the following is a feature that allows us to perform a single action in different ways.

  • Abstraction
  • Polymorphism
  • Encapsulation
  • Inheritance

  • 6. 
    Operator used to access the members of a class /package

  • (.) Dot
  • (,) Comma

  • 7. 
    What will it print?

  • 12330
  • 1230
  • 12311
  • 1211

  • 8. 
    Choose most appropriate purpose of trim() method in String?

  • to remove white spaces
  • to get a substring of the string
  • to cut String at desired index
  • to remove extra white spaces from start and end of String

  • 9. 
    Q) Thread synchronization in a process will be required when

  • All threads sharing the same address space
  • All threads sharing the same global variables
  • All threads sharing the same files
  • All

  • 10. 
    Which of the following statements outputs the fifth value in the quizzes array?

  • System.out.println(quizzes[5]);
  • quizzes[4];
  • quizzes[5];
  • System.out.println(quizzes[4]);

  • 11. 
    Try block may or may not contains catch blocks

  • True
  • False

  • 12. 
    Q) Min and Max priority of a thread in Java multithreading are

  • 1, 10
  • 0,10
  • 0,255
  • 1,256

  • 13. 
    Java has goto statement

  • True
  • False

  • 14. 
    Which method we implement from Runnable interface?

  • Run ()
  • Start ()
  • Execute ()
  • call ()

  • 15. 
    The life cycle of a thread in java is controlled by

  • JRE
  • JDK
  • JVM
  • None

  • 16. 
    Which is the correct way of writing main() function in Java?

  • public static void main(String args[ ])
  • public void main(String args[ ])
  • public static main(String args[ ])
  • public void static main(String args[ ])
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