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.Collection;

import java.util.Map;

public class Main {

    public static <T> T[] concatenateArrays(T[] array1, T[] array2) {
        if (isEmpty(array1)) {
            return array2;
        }
        if (isEmpty(array2)) {
            return array1;
        }
        T[] resArray = (T[]) java.lang.reflect.Array.newInstance(array1[0].getClass(),
                array1.length + array2.length);
        System.arraycopy(array1, 0, resArray, 0, array1.length);
        System.arraycopy(array2, 0, resArray, array1.length, array2.length);
        return resArray;
    }

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

    public static boolean isEmpty(Collection collection) {
        return (collection == null || collection.isEmpty());
    }

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