Java Collection Join join(Collection collection, String separatorString)

Description

join

License

Apache License

Declaration

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

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2015 - 2016 - 2016, Andreas Hefti, inarisoft@yahoo.de 
 * //from  ww w  .  ja v  a2 s  .c  o  m
 * 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.
 ******************************************************************************/

import java.util.Collection;

import java.util.Iterator;

public class Main {
    public static String join(Collection<?> collection, String separatorString) {
        if (collection == null) {
            return null;
        }
        StringBuilder result = new StringBuilder();

        Iterator<?> iterator = collection.iterator();
        while (iterator.hasNext()) {
            Object next = iterator.next();
            String strValue = (next != null) ? next.toString() : "";
            // TODO escape separator character

            result.append(strValue);
            if (iterator.hasNext()) {
                result.append(separatorString);
            }
        }

        return result.toString();
    }
}

Related

1. join(Collection collection, String sep)
2. join(Collection collection, String separator)
3. join(Collection collection, String separator)
4. join(Collection collection, String separator)
5. join(Collection collection, String separator)
6. join(Collection elements, String separator)
7. join(Collection items, char separator)
8. join(Collection items, String delim)
9. join(Collection items, String delimiter)