B.java

/**
 * B.java - Utility class providing mathematical operations
 * 
 * This class is used by A.java to perform various utility functions
 */

public class B {
    /**
     * Adds two integers
     * @param a first number
     * @param b second number
     * @return sum of a and b
     */
    public int add(int a, int b) {
        return a + b;
    }
    
    /**
     * Multiplies two integers
     * @param a first number
     * @param b second number
     * @return product of a and b
     */
    public int multiply(int a, int b) {
        return a * b;
    }
    
    /**
     * Checks if a number is even
     * @param number the number to check
     * @return true if number is even, false otherwise
     */
    public boolean isEven(int number) {
        return number % 2 == 0;
    }
    
    /**
     * Calculates the power of a number
     * @param base the base number
     * @param exponent the exponent
     * @return base raised to the power of exponent
     */
    public int power(int base, int exponent) {
        int result = 1;
        for (int i = 0; i < exponent; i++) {
            result *= base;
        }
        return result;
    }
}