Q: If x is 7 and y is 3, what is the value of x | y using the bitwise OR operator in Java?  

In Java, the bitwise OR operator (|) performs a bitwise OR operation on each bit of the operands. If either of the bits is 1, the result bit is set to 1. Here's an example of how you can use the bitwise OR operator in Java:

public class BitwiseORExample {
    public static void main(String[] args) {
        // Given values
        int x = 7; // binary: 0111
        int y = 3; // binary: 0011

        // Bitwise OR operation
        int result = x | y;

        // Display the result
        System.out.println("Result of bitwise OR: " + result);
    }
}

In this example, the binary representation of x is 0111, and the binary representation of y is 0011. After the bitwise OR operation, the result will be 0111, which is 7 in decimal.

Please note that the leading zeros in the binary representations are often omitted, but I included them for clarity. The | operator performs the OR operation bit by bit, so each corresponding bit in the result will be 1 if at least one of the corresponding bits in the operands is 1.