Android Iterator Join join(Iterator strings, String sep)

Description

Join a collection of strings by a seperator

Parameter

Parameter	Description
strings	iterator of string objects
sep	string to place between strings

Return

joined string

Declaration

public static String join(Iterator strings, String sep) 

Method Source Code

//package com.java2s;
import java.util.Collection;
import java.util.Iterator;

public class Main {
    /**/*  w w  w  . j  a v a 2  s .co  m*/
     * Join a collection of strings by a seperator
     * 
     * @param strings
     *            collection of string objects
     * @param sep
     *            string to place between strings
     * @return joined string
     */
    public static String join(Collection strings, String sep) {
        return join(strings.iterator(), sep);
    }

    /**
     * Join a collection of strings by a seperator
     * 
     * @param strings
     *            iterator of string objects
     * @param sep
     *            string to place between strings
     * @return joined string
     */
    public static String join(Iterator strings, String sep) {
        if (!strings.hasNext())
            return "";

        String start = strings.next().toString();
        if (!strings.hasNext()) // only one, avoid builder
            return start;

        StringBuilder sb = new StringBuilder(64).append(start);
        while (strings.hasNext()) {
            sb.append(sep);
            sb.append(strings.next());
        }
        return sb.toString();
    }
}

Related

1. join(Iterator strings, String sep)
2. join(Iterator strings, String sep)