Exception Handling in JAVA

What is the advantage of Exception Handling

• To avoid abnormal termination of a program

• To find out errors

• To Debug program

• None of these

What is the parent class of All Exceptions in JAVA

• Throw

• Exception

• Error

• Bug

Which of the following key word is optional in Exception handling program

• try

• catch

• finally

• throw

try block may or may not contains catch blocks

• True

• False

What is the purpose of 'throw' keyword

• To Raise an exception explicityly

• To Raise an exception implicityly

• To create user defined exceptions

• To create custom exceptions

Which of the following exceptions class belongs to Checked Exception

• ArithmeticException

• ClassNotFoundExceptions

• ClassCastException

• ArrayIndexOutOfBoundsException

class IT

{

static public void main(String...args)

{

int k=Integer.parseInt(args[0]);

System.out.println(k);

}

}

if args[0]="gec" then what type of exception is thrown by the above program.

• NumberFormatException

• NullPointerException

• ArrayIndexOutOfBoundsException

• InvalidStringException

What are immediate child classes of Throwable

• Error

• Exception

• CheckedException

• UnCheckedException

class Add

{

static public void main(String...args)

{

try

{

int a=10,b=0;

System.out.println(a/b);

}

catch(ArithmeticException ex)

{

System.out.println("Error:");

}

}

}

Above program throws an exception at

• Runtime

• Compile time

• either compile time or run time

• None of these

What is an exception

• Error occurred during the execution of a program

• Bug occurred during the compile time of a program

• Simply an Error

• It is related to input values