Java Collection Join join(String sep, Collection col)

Description

join

License

Open Source License

Declaration

public static String join(String sep, Collection<?> col) 

Method Source Code

//package com.java2s;
/** /*  w  ww . jav a 2  s  . com*/
 * Copyright 2012 Rafal Lewczuk <rafal.lewczuk@jitlogic.com>
 * 
 * ZORKA 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.
 * 
 * ZORKA 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
 * ZORKA. If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.*;

public class Main {
    public static String join(String sep, Collection<?> col) {
        StringBuilder sb = new StringBuilder();

        for (Object val : col) {
            if (sb.length() > 0)
                sb.append(sep);
            sb.append(val != null ? val.toString() : "null");
        }

        return sb.toString();
    }

    public static String join(String sep, Object... vals) {
        StringBuilder sb = new StringBuilder();

        for (Object val : vals) {
            if (sb.length() > 0)
                sb.append(sep);
            sb.append(val != null ? val.toString() : "null");
        }

        return sb.toString();
    }
}

Related

1. join(String glue, Collection items)
2. join(String join_string, Collection c)
3. join(String joiner, Collection strings)
4. join(String sep, Collection objects)
5. join(String sep, Collection col)
6. join(String sep, Collection parts)
7. join(String sep, Collection values)
8. join(String sep, Collection values)
9. join(String sep, Collection strings)