Test : Java_9

This test contains 10 questions based on Java.
Each question answered correctly awards you 1 point and each incorrect answer has a penalty of -0.25 points, no points are deducted for unattempted answers.

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You Get +1 for each correct answer and -0.25 for each incorrect answer

Time Left - minutes :seconds

What is the output of this program?

class access{
        public int x;
  private int y;
        void cal(int a, int b){
            x =  a + 1;
            y =  b;
        }   
        void print() {
            system.out.println(" " + y);     
        } 
    }   
    class access_specifier {
        public static void main(String args[])
        {
            access obj = new access();   
            obj.cal(2, 3);
            System.out.println(obj.x);
            obj.print();     
        }
   }

2 3	3 3
Runtime Error	Compilation Error

B

What will be the output of the program (when you run with the -ea option) ?

public class Test 
{  
    public static void main(String[] args) 
    {
        int x = 0;  
        assert (x > 0) : "assertion failed"; /* Line 6 */
        System.out.println("finished"); 
    } 
}
   

finished	Compilation fails.
An AssertionError is thrown.	An AssertionError is thrown and finished is output.

C

An assertion Error is thrown as normal giving the output "assertion failed". The word "finished" is not printed (ensure you run with the -ea option) Assertion failures are generally labeled in the stack trace with the file and line number from which they were thrown, and also in this case with the error's detail message "assertion failed". The detail message is supplied by the assert statement in line 6.

What is the correct format of declaration of abstract class

class abstract clsName { // body of class }	abstract class clsName; { // body of class }
abstract class clsName { // body of class }	None of the above

C

By which method a class can be abstracted

Private	Public
Protected	All of the above

B

Which of these methods is used to compare a specific region inside a string with another specific region in another string?

regionMatch()	match()
RegionMatches()	regionMatches()

D

What is the output of this program?

class bool_operator {
        public static void main(String args[]) 
        {    
             boolean a = true;
             boolean b = !true;
             boolean c = a | b;
       boolean d = a & b;
             boolean e = d ? b : c;
             System.out.println(d + " " + e);
        } 
    }

truefalse	falsetrue
truetrue	falsefalse

B

Which of these keywords must be used to handle the exception thrown by try block in some rational manner?

try	finally
throw	catch

D

Which of these keywords must be used to monitor for exceptions?

try	finally
throw	catch

A

Which of interface contains all the methods used for handling thread related operations in Java?

Runnable interface	ThreadHandling interface
Math interface	System interface

B

Which of the following classes are available in the java.lang package? (A) Stack (B) Object (C) Math (D) Random (E) String (F) StringBuffer (G) Vector

(B), (C) & (E)	(B), (C), (E) & (F)
(B), (E) & (F)	(A), (B), (C), (E) & (F)

B

Finish Test