Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.Collection;
import java.util.Map;

public class Main {
    public static int size(Collection<?> coll) {
        return isEmpty(coll) ? 0 : coll.size();
    }

    public static int size(Map map) {
        return isEmpty(map) ? 0 : map.size();
    }

    public static <T> int size(T[] arr) {
        return isEmpty(arr) ? 0 : arr.length;
    }

    public static boolean isEmpty(Collection<?> coll) {
        return coll == null || coll.isEmpty();
    }

    public static <T> boolean isEmpty(T[] arr) {
        return arr == null || arr.length == 0;
    }

    public static boolean isEmpty(Map map) {
        return map == null || map.isEmpty();
    }
}