JSharp - J# MCQ Questions Answers

1. Two functions are defined with the same name in a class: public boolean isGreater(int no1, int no2) public boolean isGreater(String st1, String st2) Which of the following concept does this definition represent?

2. A class named MyLoop is defined as follows: public class MyLoop { public static void main(String args[]) { int counter = 0; lbl1: for (int i=10; i<0; i--) { int j = 0; lbl2: while (j < 10) { if (j > i) break lbl2; if (i == j) { counter++; continue lbl1; } } counter--; } System.out.println(counter); } } What will happen when you try to compile and run the program?

3. What will be the output when myMethod() is executed?

4. Which one is not a correct way of getting 'sin' value?

5. You want a component to resize vertically, but not horizontally. How should it be placed?

6. What will happen on compiling and running the code?

7. Which one is a valid way to name the '.java' file containing the above classes?

8. What will be the result obtained on compiling and running the viewer on .net command prompt?

9. You have defined the following methods in one of the java classes: 1 void setId(int newId) 2 private void manageRecord(int RecordNo) 3 protected void delete(int recordNo) 4 boolean isValidRecord(int recordNo) Which of the following methods is incorrect for a class that extends above class?

10. Consider the following class: public class Intro { static int a; int b; public Intro() { int c; c = a; a++; b += c; } public void Intro() { int c; c = a; a++; b += c; } public static void main(String args[]) { new Intro(); } } What will happen on compiling and running this class?

11. You have created the following class to print some numbers:

public class PrintNumber {
         int a;
         int b;
        
         public void basefunt() {
            a = 0;
            b = 0;
            int[] c = { 0 };
            modify(b, c);
                System.out.println( '' '' + a  + b + c[0]);
         }
    
         public void modify(int b, int[] c) {
            a = 1;
            b = 1;
            c[0] = 1;
         }

          public static void main(String args[]) {
            PrintNumber  p = new PrintNumber();
            p.basefunt();
         }
       }

What will be the output?

12. What will happen on compiling and running the code?

13. What will be the output when the following code is compiled and run?

abstract class Search {
  public Search() { }
  
  public abstract void Result();
}

public class SearchMain extends Search {
  
  public SearchMain() { }
  
  public int Result() {
    System.out.println('I am Result()');
    return 1;
  }

  public static void main(String str[]) {
    new SearchMain().Result();
  }    
}

14. You have defined a static method to divide two integers: 1 public static int divide(int a,int b) throws Exception 2 { 3 if(b==0) 4 throw new Exception('Invalid Value for denominator'); 5 else 6 return (a/b); 7 } Which of the following statements is correct?

15. What will be the output of the following program? public class Prnt { public static void main(String args[]) { System.out.println(11 ^ 2); } }

16. What will be the output when the following code is compiled and run? class Equates { Equates() { int a,b,c; a = b = c = 20; System.out.println(a); } public static void main(String str[]) { new Equates(); } }

17. Consider the following program: import java.util.*; public class ListColl { public static void main(String str[]) { List l = new ArrayList(); l.add('1'); l.add('2'); l.add(1,'3'); List l2 = new LinkedList(l); l.addAll(l2); System.out.println(l); } } Which of the following sequences will be printed when the above program is run?