Java Iterable Join join(Iterable iterable, String delimiter)

License

Parameter

Return

Declaration

public static String join(Iterable<String> iterable, String delimiter) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.*;

public class Main {
    /**//from  w  ww .  j a  v  a  2s  . com
     * Joins content of any Iterable<String> object into string with specified delimiter.
     * If null or empty object is provided, empty string is returned.
     *
     * @param iterable object we can iterate with string values
     * @param delimiter string used as values splitter
     * @return joined string or empty string
     */
    public static String join(Iterable<String> iterable, String delimiter) {
        if (iterable == null)
            return "";
        Iterator<String> i = iterable.iterator();
        StringBuilder builder = new StringBuilder();
        // append first
        if (i.hasNext())
            builder.append(i.next());
        // append rest
        while (i.hasNext()) {
            builder.append(delimiter).append(i.next());
        }
        if (builder.length() > 0)
            return builder.toString();
        return "";
    }
}

Related

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8. join(Iterable s, String delimiter)
9. join(Iterable source, char delimiter)