Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */

import java.lang.reflect.Array;

import java.util.ArrayList;
import java.util.Collection;

import java.util.Iterator;

public class Main {
    /**
     * Returns an array containing all of the elements of the
     * Iterator
     * @param iterator Iterator to copy the contexts of
     * @return an array containing a copy of the iterator contents
     */
    public static <T> T[] toArray(Iterator<? extends T> iterator, Class<T> type) {
        if (iterator.hasNext()) {
            Collection arrayList = arrayList(iterator);
            T[] outArray = (T[]) Array.newInstance(type, arrayList.size());

            return (T[]) arrayList.toArray(outArray);
        } else {
            // optimize empty iterator case
            return (T[]) Array.newInstance(type, 0);
        }
    }

    /**
     * Returns an ArrayList containing all of the elements of the
     * Iterator
     * @param iterator Iterator to copy the contexts of
     * @return an ArrayList containing a copy of the iterator contents
     */
    public static <T> ArrayList<T> arrayList(Iterator<T> iterator) {
        ArrayList<T> arrayList = new ArrayList<T>();

        while (iterator.hasNext())
            arrayList.add(iterator.next());

        return arrayList;
    }
}