Java Iterable Join joinStrings(Iterable arr, String glue)

Description

join Strings

License

Open Source License

Declaration

public static String joinStrings(Iterable<?> arr, String glue) 

Method Source Code

//package com.java2s;
/*//  www .  j  ava 2 s.  c om
 *  Copyright (C) 2010-2015 JPEXS, All rights reserved.
 *
 * This library 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 3.0 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.
 */

import java.util.List;

public class Main {
    public static String joinStrings(Iterable<?> arr, String glue) {
        StringBuilder ret = new StringBuilder();
        boolean first = true;
        for (Object s : arr) {
            if (!first) {
                ret.append(glue);
            } else {
                first = false;
            }
            ret.append(s);
        }
        return ret.toString();
    }

    public static String joinStrings(String[] arr, String glue) {
        StringBuilder ret = new StringBuilder();
        boolean first = true;
        for (String s : arr) {
            if (!first) {
                ret.append(glue);
            } else {
                first = false;
            }
            ret.append(s);
        }
        return ret.toString();
    }

    public static String joinStrings(List<String> arr, String formatString,
            String glue) {
        StringBuilder ret = new StringBuilder();
        boolean first = true;
        for (String s : arr) {
            if (!first) {
                ret.append(glue);
            } else {
                first = false;
            }
            ret.append(String.format(formatString, s));
        }
        return ret.toString();
    }

    public static String joinStrings(String[] arr, String formatString,
            String glue) {
        StringBuilder ret = new StringBuilder();
        boolean first = true;
        for (String s : arr) {
            if (!first) {
                ret.append(glue);
            } else {
                first = false;
            }
            ret.append(String.format(formatString, s));
        }
        return ret.toString();
    }

    public static String format(String str, int len) {
        if (len <= str.length()) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        for (int ii = str.length(); ii < len; ii++) {
            sb.append(' ');
        }
        return sb.toString();
    }
}

Related

1. join(String seprator, Iterable coll)
2. join(StringBuilder buf, Iterable values, String separator)
3. joinIterableOnComma(Iterable iterable)
4. joinIterables(final Iterable... iterables)
5. joinStr(CharSequence glue, Iterable parts)
6. joinStrings(Iterable strs, String sep)
7. joinWith(Iterable elements, String join)