Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2005, 2014 springside.github.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *******************************************************************************/

import java.util.Collection;

import java.util.List;

public class Main {

    public static <T> T getFirst(Collection<T> collection) {
        if (isEmpty(collection)) {
            return null;
        }
        if (collection instanceof List) {
            return ((List<T>) collection).get(0);
        }
        return collection.iterator().next();
    }

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