SCJP : Exception Mock Exam Practice Questions

Questions no -1 
What is the output for the below code ?

public class SuperClass {
	public int doIt(String str, Integer... data)throws ArrayIndexOutOfBoundsException{
		String signature = "(String, Integer[])";
		System.out.println(str + "  " + signature);
		return 1;
	}

}


public class SubClass extends SuperClass{

	public int doIt(String str, Integer... data) throws Exception
	{
		String signature = "(String, Integer[])";
		System.out.println("Overridden: " + str + " " + signature);
		return 0;
	}
	
	public static void main(String... args)
	{
		SuperClass sb = new SubClass();
		try{
			sb.doIt("hello", 3);
		}catch(Exception e){
			
		}
		
	}
	
}



options
A)Overridden: hello (String, Integer[])
B)hello (String, Integer[])
C)This code throws an Exception at Runtime
D)Compile with error

Correct answer is : D

Explanations : Exception Exception is not compatible with throws clause in SuperClass.doIt(String, Integer[]). 
The same exception or subclass of that exception is allowed.

Questions no -2
What is the result of executing the following code, using the parameters 0 and 3 ?

public void divide(int a, int b) {
	try {
		int c = a / b;
	} catch (Exception e) {
		System.out.print("Exception ");
	} finally {
		System.out.println("Finally");
}



options
A)Prints out: Exception Finally
B)Prints out: Finally
C)Prints out: Exception
D)Compile with error

Correct answer is : D

Explanations : finally block always executed whether exception occurs or not. 
	0/3 = 0 Does not throws exception.

Questions no -3
Which of the below statement is true about Error?



options
A)An Error is a subclass of Throwable
B)An Error is a subclass of Exception
C)Error indicates serious problems that a reasonable application should not try to catch.
D)An Error is a subclass of IOException

Correct answer is : A and C

Explanations : An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.

Questions no -4
Which of the following is type of RuntimeException?





options
A)IOException
B)ArrayIndexOutOfBoundsException
C)Exception
D)Error

Correct answer is : B

Explanations : Below is the tree.
java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.lang.RuntimeException
              java.lang.IndexOutOfBoundsException
                  java.lang.ArrayIndexOutOfBoundsException