Test : Java_7

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.

Select Test Type

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

Time Left - minutes :seconds

What will be the output of the program?

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

finished	Compiliation fails.
An AssertionError is thrown and finished is output.	An AssertionError is thrown with the message "assertion failed."

B

Compilation Fails. You can't use the Assert statement in a similar way to the ternary operator. Don't confuse.

Which of these method is used to tell the calling thread to give up monitor and go to sleep until some other thread enters the same monitor?

wait()	notify()
notifyAll()	sleep()

A

Which of these keywords is used to refer to member of base class from a sub class?

upper	super
this	None of the mentioned

B

Which of these method of Thread class is used to Suspend a thread for a period of time?

terminate()	suspend()
stop()	sleep()

D

Which of these is true about unmodifiableCollection() method?

unmodifiableCollection() returns a collection that cannot be modified.	unmodifiableCollection() method is available only for List and Set.
unmodifiableCollection() is defined in Collection class.	None of the mentioned.

B

What is the length of the application box made by this program?

import java.awt.*;
    import java.applet.*;
    public class myapplet extends Applet {
        public void paint(Graphics g) {
            g.drawString("A Simple Applet", 20, 20);    
        }
    }

20	50
100	System Dependent

A

Suppose that s1 and s2 are two strings. Which of the statements or expressions are valid? (A) String s3 = s1 + s2; (B) String s3 = s1 - s2; (C) s1 <= s2 (D) s1.compareTo(s2); (E) int m = s1.length();

(A), (C) & (E)	(D) & (E)
(C), (D) & (E)	(A), (D) & (E)

D

toRadian() and toDegree() methods were added by which version of Java?

Java 1.0	Java 1.5
Java 2.0	Java 3.0

C

A class member declared protected becomes member of subclass of which type?

public member	private member
protected member	static member

B

What is the output of this program?

 class newthread implements Runnable {
 Thread t;
        newthread() {
            t = new Thread(this,"My Thread");
            t.start();
 }
 public void run() {
     System.out.println(t);
 }
    }
    class multithreaded_programing {
        public static void main(String args[]) {
            new newthread();        
        }
    }

My Thread	Thread[My Thread,5,main]
Compilation Error	Runtime Error

B

Finish Test