Java Array Join join(String[] array)

Description

Joins the given array into a comma-separated string.

License

Open Source License

Parameter

Parameter	Description
array	The array to join.

Return

A comma-separated string representation of the given array .

Declaration

public static String join(String[] array) 

Method Source Code

//package com.java2s;
/*//from   w  w  w  .j a va2 s  .co m
 * Copyright (c) 2010-2011 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;

import static java.util.Arrays.asList;

public class Main {
    /**
     * Joins the given {@code array} into a comma-separated string.
     *
     * @param array The array to join.
     * @return A comma-separated string representation of the given {@code array}.
     */
    public static String join(String[] array) {
        return array == null ? null : join(asList(array));
    }

    /**
     * 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}.
     */
    public 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(String[] a1, String[] a2)
2. join(String[] ar, String sep)
3. join(String[] args)
4. join(String[] args, String delimiter)
5. join(String[] array)
6. join(String[] array)
7. join(String[] array)
8. join(String[] array)
9. join(String[] array, String delim)