Q: What is the value of the expression x < y if x is 9 and y is 4 in Java?  

The less-than operator (<) in Java is used to check if the left operand is less than the right operand. In this case, 9 < 4 is true because 9 is less than 4.

If x is 9 and y is 4, the result of the expression x < y using the less-than operator (<) in Java would be false. The less-than operator evaluates to true if the left operand is less than the right operand, and in this case, 9 is not less than 4.

Here's a simple example:

public class LessThanOperatorExample {
    public static void main(String[] args) {
        // Example values
        int x = 9;
        int y = 4;

        // Check if x is less than y
        boolean result = x < y;

        // Print the result
        System.out.println("Is x less than y? " + result);
    }
}

In this case, the output will be:

Is x less than y? false