Java Exception Handling: Which Keyword Declares an Exception in a Method?

The correct keyword used when declaring an exception in a method is 'throws'.

Explanation:

• 'throws' keyword: Used in the method signature to indicate that the method may throw a specific exception. It informs the caller that they need to handle the exception using a 'try-catch' block.

• 'throw' keyword: Used within the method body to actually throw an exception object.

• 'catch' keyword: Used within a 'try-catch' block to handle a caught exception.

• 'try' keyword: Used to enclose code that might throw an exception.

Example:

public void divide(int a, int b) throws ArithmeticException {
    if (b == 0) {
        throw new ArithmeticException("Division by zero");
    }
    int result = a / b;
    System.out.println(result);
}

In this example, the divide method declares that it might throw an ArithmeticException using the throws keyword. If the denominator b is zero, the method throws a new ArithmeticException object using the throw keyword. The caller of this method is responsible for handling the exception using a try-catch block.