Newgen Placement Paper -: Java Questions With Answers

Newgen Previous Years Solved Sample Placement Papers

1. What will be the output of the following Java program?

       class exception_handling 
       {
           public static void main(String args[]) 
           {
               try 
               {
                   int a, b;
                   b = 0;
                   a = 5 / b;
                   System.out.print("A");
               }
               catch(ArithmeticException e) 
               {
                   System.out.print("B");
               }
           }
       }
       

   a) A b) B c) Compilation Error d) Runtime Error Answer: b) B Explanation: A division by zero causes an ArithmeticException, which is caught by the catch block, printing "B". Output:

       $ javac exception_handling.java
       $ java exception_handling
       B
       

2. What will be the output of the following Java program?

       class exception_handling 
       {
           public static void main(String args[]) 
           {
               try 
               {
                   int a, b;
                   b = 0;
                   a = 5 / b;
                   System.out.print("A");
               }
               catch(ArithmeticException e) 
               {
                   System.out.print("B");
               }
               finally 
               {
                   System.out.print("C");
               }
           }
       }
       

   a) A b) B c) AC d) BC Answer: d) BC Explanation: The ArithmeticException is caught by the catch block, printing "B", and the finally block is executed, printing "C". Output:

       $ javac exception_handling.java
       $ java exception_handling
       BC
       

3. What will be the output of the following Java program?

       class exception_handling 
       {
           public static void main(String args[]) 
           {
               try 
               {
                   int i, sum;
                   sum = 10;
                   for (i = -1; i < 3 ;++i)
                       sum = (sum / i);
               }
               catch(ArithmeticException e) 
               {
                   System.out.print("0");
               } 
               System.out.print(sum);
           }
       }
       

   a) 0 b) 05 c) Compilation Error d) Runtime Error Answer: c) Compilation Error Explanation: The variable sum is declared inside the try block, making it out of scope when accessed outside the try block, resulting in a compilation error. Output:

       $ javac exception_handling.java
       Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
       sum cannot be resolved to a variable