Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Collection;

public class Main {
    public static <T> T first(Collection<T> collection) {
        if (isNotEmpty(collection)) {
            return collection.iterator().next();
        }
        return null;
    }

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

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