Java List Join join(List list)

Description

Joins the given list into a comma-separated string.

License

Open Source License

Parameter

Parameter	Description
list	The list to join.

Return

A comma-separated string representation of the given list .

Declaration

static String join(List<String> list) 

Method Source Code

//package com.java2s;
/*//w w w  .  ja  v a  2 s. c o m
 * Copyright (c) 2010 Mark Allen.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.util.List;

public class Main {
    /**
     * Joins the given {@code list} into a comma-separated string.
     * 
     * @param list
     *          The list to join.
     * @return A comma-separated string representation of the given {@code list}.
     */
    static String join(List<String> list) {
        if (list == null)
            return null;

        StringBuilder joined = new StringBuilder();
        boolean first = true;

        for (String element : list) {
            if (first)
                first = false;
            else
                joined.append(",");
            joined.append(element);
        }

        return joined.toString();
    }
}

Related

1. join(List l, String joiner)
2. join(List lines, char delim)
3. join(List list)
4. join(List list)
5. join(List list)
6. join(List list)
7. join(List list)
8. join(List list, String conjunction)
9. join(List list, String delim)