Java Collection Join join(Collection collection, String join)

Description

Join the given collection with the given join value.

License

Open Source License

Parameter

Parameter	Description
collection	The collection (List, Set) to be joined.
join	The value to be joined between each part.

Return

The joined collection.

Declaration

public static String join(Collection<?> collection, String join) 

Method Source Code

//package com.java2s;
/*/*  ww  w .ja va 2  s. c  om*/
 * net/balusc/util/StringUtil.java
 *
 * Copyright (C) 2007 BalusC
 *
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Lesser General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this library.
 * If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.Collection;
import java.util.Iterator;

public class Main {
    /**
     * Join the given collection with the given join value.
     * @param collection The collection (List, Set) to be joined.
     * @param join The value to be joined between each part.
     * @return The joined collection.
     */
    public static String join(Collection<?> collection, String join) {
        StringBuilder builder = new StringBuilder();

        for (Iterator<?> iter = collection.iterator(); iter.hasNext();) {
            builder.append(iter.next());

            if (iter.hasNext()) {
                builder.append(join);
            }
        }

        return builder.toString();
    }

    /**
     * Join the given ordinary array with the given join value.
     * @param objects The ordinary array (String[], Integer[], etc) to be joined.
     * @param join The value to be joined between each part.
     * @return The joined array.
     */
    public static String join(Object[] objects, String join) {
        StringBuilder builder = new StringBuilder();

        for (int i = 0; i < objects.length;) {
            builder.append(objects[i]);

            if (++i < objects.length) {
                builder.append(join);
            }
        }

        return builder.toString();
    }
}

Related

1. join(Collection col, String separator)
2. join(Collection coll, String delim)
3. join(Collection collection, String delimiter)
4. join(Collection collection, String delimiter)
5. join(Collection collection, String inputSeparator)
6. join(Collection collection, String sep)
7. join(Collection collection, String separator)
8. join(Collection collection, String separator)
9. join(Collection collection, String separator)