Java tutorial
//package com.java2s; import java.util.ArrayList; import java.util.Map; import android.util.SparseArray; public class Main { public static boolean isNotEmpty(ArrayList<?> arrayList) { return !isEmpty(arrayList); } public static boolean isNotEmpty(Map<?, ?> map) { return !isEmpty(map); } public static boolean isNotEmpty(Object[] objects) { return !isEmpty(objects); } public static boolean isNotEmpty(SparseArray sparseArray) { return !isEmpty(sparseArray); } public static boolean isEmpty(ArrayList<?> arrayList) { return arrayList == null || arrayList.isEmpty(); } public static boolean isEmpty(Map<?, ?> map) { return map == null || map.keySet().isEmpty(); } public static boolean isEmpty(Object[] objects) { return objects == null || objects.length <= 0; } public static boolean isEmpty(SparseArray sparseArray) { return sparseArray == null || sparseArray.size() <= 0; } }