Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.*;

public class Main {
    public static int sizeOf(Collection<?> collection) {
        if (isEmpty(collection)) {
            return 0;
        }
        return collection.size();
    }

    public static int sizeOf(Map<?, ?> map) {
        if (map == null) {
            return 0;
        }
        return map.size();
    }

    public static boolean isEmpty(Map<?, ?> map) {
        return !isNotEmpty(map);
    }

    public static boolean isEmpty(Collection<?> collection) {
        return !isNotEmpty(collection);
    }

    public static boolean isNotEmpty(Map<?, ?> map) {
        return map != null && map.size() > 0;
    }

    public static boolean isNotEmpty(Collection<?> collection) {
        return collection != null && collection.size() > 0;
    }
}