Java Iterable Join joinStrings(Iterable strs, String sep)

Description

join Strings

License

Open Source License

Parameter

Parameter	Description
strs	A collection of objects to join
sep	A seperator string

Return

The concatenated sequence of the given strings, interspersed with the seperator.

Declaration

public static String joinStrings(Iterable<?> strs, String sep) 

Method Source Code

//package com.java2s;
/*//from  ww  w . j a  v  a 2s  . c o  m
 * This file is part of JOP, the Java Optimized Processor
 *   see <http://www.jopdesign.com/>
 *
 * Copyright (C) 2008, Benedikt Huber (benedikt.huber@gmail.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

import java.util.Iterator;

public class Main {
    /**
     * @param strs A collection of objects to join
     * @param sep  A seperator string
     * @return The concatenated sequence of the given strings, interspersed with the seperator.
     */
    public static String joinStrings(Iterable<?> strs, String sep) {
        StringBuilder b = new StringBuilder("");
        Iterator<?> i = strs.iterator();
        if (!i.hasNext())
            return "";
        b.append(i.next());
        while (i.hasNext()) {
            b.append(sep);
            b.append(i.next());
        }
        return b.toString();
    }

    public static String joinStrings(Object[] entries, String sep) {
        return joinStrings(Arrays.asList(entries), sep);
    }

    /**
     * @param entries a collection of things
     * @param max maximum number of entries to print
     * @return a string representation of this collection with up to max entries. 
     */
    public static String toString(Collection<?> entries, int max) {
        StringBuffer sb = new StringBuffer("[");
        int cnt = Math.min(entries.size(), max);
        Iterator<?> it = entries.iterator();
        for (int i = 0; i < cnt; i++) {
            if (i > 0)
                sb.append(",");
            sb.append(it.next().toString());
        }
        if (cnt < entries.size()) {
            sb.append(",...");
        }
        sb.append("]");
        return sb.toString();
    }
}

Related

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