Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2007 DSource.org and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Bruno Medeiros - initial implementation
 *******************************************************************************/

import java.util.Collection;
import java.util.Collections;

import java.util.List;

public class Main {
    /** @return given coll if it's non-null, an empty collection otherwise.
     * The returned collection cannot be modified. */
    public static <E> Collection<E> nullToEmpty(Collection<E> coll) {
        return coll == null ? Collections.EMPTY_LIST : coll;
    }

    /** @return given list if it's non-null, an empty List otherwise.
     * The returned list cannot be modified. */
    public static <E> List<E> nullToEmpty(List<E> list) {
        return list == null ? Collections.EMPTY_LIST : list;
    }
}