Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Iterator;

public class Main {
    public static String join(final Iterable<?> iterable, String separator) {

        // handle null, zero and one elements before building a buffer
        if (iterable == null) {
            return null;
        }
        Iterator<?> iterator = iterable.iterator();
        if (!iterator.hasNext()) {
            return "";
        }
        final Object first = iterator.next();
        if (!iterator.hasNext()) {
            return first.toString();
        }

        // two or more elements
        final StringBuilder buf = new StringBuilder(256); // Java default is 16, probably too small
        if (first != null) {
            buf.append(first);
        }

        while (iterator.hasNext()) {
            buf.append(separator);
            final Object obj = iterator.next();
            if (obj != null) {
                buf.append(obj);
            }
        }

        return buf.toString();
    }
}