Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright (C) 2012-2015 52North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public
 * License version 2 and the aforementioned licenses.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 */

import java.util.Collection;

import java.util.Map;

public class Main {
    /**
     * Check if collection is not null and not empty
     *
     * @param collection
     *            Collection to check
     *
     * @return empty or not
     */
    public static <T> boolean isNotEmpty(Collection<T> collection) {
        return !isEmptyOrNull(collection);
    }

    /**
     * Check if collection is not null and not empty
     *
     *
     * @param map
     *            Map to check
     *
     * @return <tt>false</tt>, if map is <tt>null</tt> or empty, else
     *         <tt>true</tt>.
     */
    public static <K, V> boolean isNotEmpty(Map<K, V> map) {
        return map != null && !map.isEmpty();
    }

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

    /**
     * Check if collection is not <tt>null</tt> and empty
     *
     * @param collection
     *            Collection to check
     *
     * @return <tt>true</tt>, if collection is not null and empty, else
     *         <tt>false</tt>
     */
    public static <T> boolean isEmpty(Collection<T> collection) {
        return collection != null && collection.isEmpty();
    }

    /**
     * Check if map is not <tt>null</tt> and empty
     *
     * @param map
     *            map to check
     *
     * @return <tt>true</tt>, if map is not null and empty, else <tt>false</tt>
     */
    public static <K, V> boolean isEmpty(Map<K, V> map) {
        return map != null && map.isEmpty();
    }
}