Java tutorial
//package com.java2s; import java.util.Collection; import java.util.Map; public class Main { public static boolean emptyOrNull(byte[] values) { return values == null || values.length == 0; } public static boolean emptyOrNull(Object[] values) { return values == null || values.length == 0; } public static boolean emptyOrNull(Map<?, ?> values) { return values == null || values.isEmpty(); } public static boolean emptyOrNull(Collection<?> values) { return values == null || values.isEmpty(); } }