Start Quiz: Prateek Ashtikar SCJP Online Exam 310-065

Question: class Clidders { public final void flipper() { System.out.println("Clidder"); } } public class Clidlets extends Clidders { public void flipper() { System.out.println("Flip a Clidlet"); super.flipper(); } public static void main(String [] args) { new Clidlets().flipper(); } } What is the result?

Choices:

Clidder

Flip a Clidlet

RuntimeException

compiles successfully

Compilation fails

Question: class Foozit { public static void main(String[] args) { Integer x = 0; Integer y = 0; for(Short z = 0; z < 5; z++) if((++x > 2) || (++y > 2)) x++; System.out.println(x + " " + y); } }

Choices:

6 3

4 2

8 4

8 2

Question: class Circus { public static void main(String[] args) { int x = 9; int y = 6; for(int z = 0; z < 6; z++, y--) { if(x > 2) x--; label: if(x > 5) { System.out.print(x + " "); --x; continue label; } x--; } } } What is the result?

Choices:

No O/P produced...

compilation fails.

RunTimeException

Question: Which are methods of the Object class? (.)

Choices:

wait(long msecs);

notify();

run();

start();

notifyAll();

Question: Given the following directory structure: org | -- Robot.class | | -- ex |-- Pet.class | |-- why |-- Dog.class And the following source file: class MyClass { Robot r; Pet p; Dog d; } Which statement(s) must be added for the source file to compile? (.)

Choices:

import org.*;

import org.ex.*;

package org.*;

package org.ex.why;

package org.ex.*;

Question: Given two files: package xcom; public class Stuff { public static final int MY_CONSTANT = 5; public static int doStuff(int x) { return (x++)*x; } } import xcom.Stuff.*; import java.lang.System.out; class User { public static void main(String[] args) { new User().go(); } void go() { out.println(doStuff(MY_CONSTANT)); } } What is the result?

Choices:

5

6

compilation error

run time Exception

None of the above

Question: class Titanic { public static void main(String[] args) { Boolean b1 = true; boolean b2 = false; boolean b3 = true; if((b1 & b2) | (b2 & b3) & b3) System.out.print("alpha "); if((b1 = false) | (b1 & b3) | (b1 | b2)) System.out.print("beta "); } } What is the result? Correct Answer

Choices:

alpha

beta

alpha beta

No O/P produced

compilation fails

Question: class Polish { public static void main(String[] args) { int x = 4; StringBuffer sb = new StringBuffer("..fedcba"); sb.delete(3,6); sb.insert(3, "az"); if(sb.length() > 6) x = sb.indexOf("b"); sb.delete((x-3), (x-2)); System.out.println(sb); } }

Choices:

..azab

..azba

..aabz

..zbaa

Question: class TarsierX { static String s = "-"; public static void main(String[] args) { go(); System.out.println(s); } { go(); } static { go(); } static void go() { s+= "s"; } } What is the result?

Choices:

ss

-ss

-s

s

Question: 12. TreeSet map = new TreeSet(); 13. map.add("one"); 14. map.add("two"); 15. map.add("three"); 16. map.add("four"); 17. map.add("one"); 18. Iterator it = map.iterator(); 19. while (it.hasNext() ) { 20. System.out.print( it.next() + " " ); 21. } What is the result?

Choices:

four one three two

one two three four

two four one three

two three four one

four three two one

Question: class Knowing { static final long tooth = 343L; static long doIt(long tooth) { System.out.print(++tooth + " "); return ++tooth; } public static void main(String[] args) { System.out.print(tooth + " "); final long tooth = 340L; new Knowing().doIt(tooth); System.out.println(tooth); } }

Choices:

340 341 343

341 343 340

343 341 340

compilation fails