PredicateUtilities.java

package com.dtcc.exams.fundamentals;

public class PredicateUtilities {
    /**
     * @param value - the value to be evaluated
     * @return true if `value` is a multiple of 2
     */
    public static Boolean isEven(Integer value) {
        if (value % 2 == 0)
            return true;
        else
            return false;
    }

    /**
     * @param value - the value to be evaluated
     * @return true if `value` is not a multiple of 2
     */
    public static Boolean isOdd(Integer value) {
        if(value % 2 != 0)
        return true;
        else return false;
    }

    /**
     * @param value - the value to be evaluated
     * @return true if `value` is a multiple of 3
     */
    public static Boolean isMultipleOf3(Integer value) {
        if(value % 3 == 0)
            return true;
        else return false;
    }

    /**
     *
     * @param value - the value to be evaluated
     * @param multiple - the multiple to test `value` against
     * @return true if `value` is a multiple of `multiple`
     */
    public static Boolean isMultipleOfN(Integer value, Integer multiple) {
        if(value % multiple == 0)
            return true;
        else return false;
    }

    /**
     * @param string - the string to be evaluated
     * @return true if `string` starts with a capital letter
     */
    public static Boolean startsWithCapitalLetter(String string) {
        if(Character.isUpperCase(string.charAt(0)) == true)
        return true;
        else
            return false;
    }
}