Java Collection to String collectionToStringList(Collection<?> list, String delimiter)

Description

Takes a collection of objects and converts them to a list where each item is converted to a string by its toString() method.

License

Apache License

Parameter

Parameter	Description
list	The collection of items.
delimiter	The delimiter to use between each item.

Return

A String representing all of the list items in a delimited list. This will never return null.

Declaration

public static String collectionToStringList(Collection<?> list, String delimiter)

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2012 The Regents of the University of California
 * /*from w  w  w.j a va 2  s .c om*/
 * 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;

public class Main {
    /**
     * Takes a collection of objects and converts them to a list where each 
     * item is converted to a string by its toString() method.
     * 
     * @param list The collection of items.
     * 
     * @param delimiter The delimiter to use between each item.
     * 
     * @return A String representing all of the list items in a delimited list.
     *          This will never return null.
     */
    public static String collectionToStringList(Collection<?> list, String delimiter) {
        boolean firstPass = true;
        StringBuilder resultBuilder = new StringBuilder();

        for (Object item : list) {
            if (firstPass) {
                firstPass = false;
            } else {
                resultBuilder.append(delimiter);
            }

            resultBuilder.append(item.toString());
        }

        return resultBuilder.toString();
    }
}

Java Collection to String collectionToStringList(Collection list, String delimiter)