Construct a string by toString() each item in the collection with inBetween between each item. - Java java.util

Java examples for java.util:Collection Operation

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Description

Construct a string by toString() each item in the collection with inBetween between each item.

Demo Code

/*/*from  w w  w .j a va 2 s  .c o  m*/
 * The MIT License
 *
 * Copyright (c) 2010 The Broad Institute
 *
 * 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.
 */
//package com.java2s;
import java.util.*;

public class Main {
    public static void main(String[] argv) {
        Collection items = java.util.Arrays.asList("asdf", "java2s.com");
        String inBetween = "java2s.com";
        System.out.println(join(items, inBetween));
    }

    /** Construct a string by toString()ing each item in the collection with inBetween between each item. */
    public static String join(final Collection<?> items,
            final String inBetween) {
        final StringBuilder builder = new StringBuilder();
        for (final Object item : items) {
            if (builder.length() > 0)
                builder.append(inBetween);
            builder.append(item);
        }

        return builder.toString();
    }
}

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