Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Iterator;

public class Main {
    /**
     * Concatenates the elements from the collection to one string.
     * If the collection is empty an empty string is returned.
     *
     * @param collection collection
     * @param delimiter delimiter between the elements
     * @return concatenation
     */
    public static String join(Iterable collection, String delimiter) {
        return join(collection.iterator(), delimiter);
    }

    /**
     * Concatenates the elements of the iterator to one string.
     * If the iterator has no elements an empty string is returned.
     *
     * @param iterator iterator
     * @param delimiter delimiter between the elements
     * @return concatenation
     */
    public static String join(Iterator iterator, String delimiter) {
        return join(iterator, "", delimiter, "");
    }

    /**
     * Concatenates the elements from the collection to one string.
     * If the collection is empty an empty string is returned.
     *
     * @param collection collection
     * @param start start string
     * @param delimiter delimiter between the elements
     * @param end end string
     * @return concatenation
     */
    public static String join(Iterable collection, String start, String delimiter, String end) {
        return join(collection.iterator(), start, delimiter, end);
    }

    /**
     * Concatenates the elements of the iterator to one string.
     * If the iterator has no elements an empty string is returned.
     *
     * @param iterator iterator
     * @param start start string
     * @param delimiter delimiter between the elements
     * @param end end string
     * @return concatenation
     */
    public static String join(Iterator iterator, String start, String delimiter, String end) {
        if (iterator.hasNext()) {
            StringBuffer s = new StringBuffer();

            s.append(start);
            s.append(iterator.next());

            while (iterator.hasNext()) {
                s.append(delimiter);
                s.append(iterator.next());
            }

            s.append(end);

            return s.toString();
        } else {
            return "";
        }
    }
}