Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Collection;

import java.util.List;
import java.util.Map;

public class Main {

    public static <T> List<T> concat(List<T> collection1, List<T> collection2) {
        if (isEmpty(collection1)) {
            return collection2;
        }
        if (isEmpty(collection2)) {
            return collection1;
        }

        collection1.addAll(collection2);
        return collection1;

    }

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

    public static boolean isEmpty(Collection<?> collection) {
        return (collection == null) || (collection.size() == 0);
    }
}