Java Exception MCQ - Quiz

Q: Which keyword is used to explicitly throw an exception?

Q: Exception generated in try block is caught in ........... block.

Q: In which of the following package Exception class exist?

Q: The class at the top of exception class hierarchy is .................

Q: Which keyword is used to specify the exception thrown by the method?

Q: Which of the following blocks execute compulsorily whether an exception is caught or not.

Q: What will be the output?

class MyClass{
      public String test(){
            try{
                  System.out.print("One");
                  return "";
            }
            finally{
                  System.out.print("Two");
            }
      }
}

public class Test{
      public static void main(String args[]){
            MyClass m =  new MyClass();
            m.test();
      }
}

Q: Determine output of the following program code?

public class Test{
      public static void main(String args[]){
            int i;
            try{
                  i = calculate();
                  System.out.println(i);
            }catch(Exception e){
                  System.out.println("Error occured");
            }
      }

      static int calculate(){
            return (7/2);
      }
}

Q: What will be the result if NullPointerException occurs at line 2?

1.  try{
2.       //some code goes here
3.  }
4.  catch(NullPointerException ne){
5.       System.out.print("1 ");
6.  }
7.  catch(RuntimeException re){
8.       System.out.print("2 ");
9.  }
10. finally{
11.      System.out.print("3");
12. }

Q: Predict the output:

public class Test{     
      public static void main(String args[]){
            try{
                  String arr[] = new String[10];
                  arr = null;
                  arr[0] = "one";
                  System.out.print(arr[0]);
            }catch(Exception ex){
                  System.out.print("exception");
            }catch(NullPointerException nex){
                  System.out.print("null pointer exception");
            }   
      }
}