Java Collection Join join(Collection items, String delimiter)

Description

Joins items of the provided collection into a single String using the delimiter specified.

License

Apache License

Parameter

Parameter	Description
items	a parameter
delimiter	a parameter

Declaration

public static String join(Collection<?> items, String delimiter) 

Method Source Code

//package com.java2s;
/*/*from w  w w .  j  a va2 s .c om*/
  * * Copyright (c) 2004-2016 MarkLogic Corporation
  * *
  * * Licensed under the Apache License, Version 2.0 (the "License");
  * * you may not use this file except in compliance with the License.
  * * You may obtain a copy of the License at
  * *
  * * http://www.apache.org/licenses/LICENSE-2.0
  * *
  * * Unless required by applicable law or agreed to in writing, software
  * * distributed under the License is distributed on an "AS IS" BASIS,
  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * * See the License for the specific language governing permissions and
  * * limitations under the License.
  * *
  * * The use of the Apache License does not indicate that this project is
  * * affiliated with the Apache Software Foundation.
 */

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

public class Main {
    /**
     * Joins items of the provided collection into a single String using the
     * delimiter specified.
     *
     * @param items
     * @param delimiter
     * @return
     */
    public static String join(Collection<?> items, String delimiter) {
        if (items == null) {
            return null;
        }
        StringBuilder joinedValues = new StringBuilder();
        Iterator<?> iterator = items.iterator();
        if (iterator.hasNext()) {
            joinedValues.append(iterator.next().toString());
        }
        while (iterator.hasNext()) {
            joinedValues.append(delimiter);
            joinedValues.append(iterator.next().toString());
        }
        return joinedValues.toString();
    }

    /**
     * Joins items of the provided Array of Objects into a single String using
     * the delimiter specified.
     *
     * @param items
     * @param delimiter
     * @return
     */
    public static String join(Object[] items, String delimiter) {
        return join(Arrays.asList(items), delimiter);
    }
}

Related

1. join(Collection collection, String separator)
2. join(Collection collection, String separatorString)
3. join(Collection elements, String separator)
4. join(Collection items, char separator)
5. join(Collection items, String delim)
6. join(Collection iterable, String delimiter)
7. join(Collection objects, String token, StringBuilder buf)
8. join(Collection objectsToJoin, String separator)
9. join(Collection objs, String delim)