复制数组

/**

 * 

 * Copyright 2008 - 2011

 * 

 * Licensed 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.

 * 

 * @project loonframework

 * @author chenpeng

 * @email?ceponline@yahoo.com.cn

 * @version 0.1.1

 */

//package com.nowjava;//from N o w  J a v a  . c o m

import java.lang.reflect.Array;


public class Main {

    public static void main(String[] argv) {

        Object src = "nowjava.com";

        System.out.println(copyOf(src));

    }


    public static Object copyOf(Object src) {

        int srcLength = Array.getLength(src);

        Class<?> srcComponentType = src.getClass().getComponentType();

        Object dest = Array.newInstance(srcComponentType, srcLength);

        if (srcComponentType.isArray()) {

            for (int i = 0; i < Array.getLength(src); i++) {/* 来自 时 代 J     a    v  a - nowjava.com*/

                Array.set(dest, i, copyOf(Array.get(src, i)));

            }

        } else {

            System.arraycopy(src, 0, dest, 0, srcLength);

        }

        return dest;

    }


    public static int[][] copyOf(int[][] obj) {

        int size = obj.length;

        int[][] copy = new int[size][];

        for (int i = 0; i < size; i++) {

            int len = obj[i].length;

            int[] res = new int[len];

            System.arraycopy(obj[i], 0, res, 0, len);

            copy[i] = res;

        }

        return copy;

    }


    public static String[] copyOf(String[] obj) {

        return copyOf(obj, obj.length);

    }


    public static String[] copyOf(String[] obj, int newSize) {

        String tempArr[] = new String[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static int[] copyOf(int[] obj) {

        return copyOf(obj, obj.length);

    }


    public static int[] copyOf(int[] obj, int newSize) {

        int tempArr[] = new int[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static double[] copyOf(double[] obj) {

        return copyOf(obj, obj.length);

    }


    public static double[] copyOf(double[] obj, int newSize) {

        double tempArr[] = new double[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static float[] copyOf(float[] obj) {

        return copyOf(obj, obj.length);

    }


    public static float[] copyOf(float[] obj, int newSize) {

        float tempArr[] = new float[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static byte[] copyOf(byte[] obj) {

        return copyOf(obj, obj.length);

    }


    public static byte[] copyOf(byte[] obj, int newSize) {

        byte tempArr[] = new byte[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static char[] copyOf(char[] obj) {

        return copyOf(obj, obj.length);

    }


    public static char[] copyOf(char[] obj, int newSize) {

        char tempArr[] = new char[newSize];

        System.arraycopy(obj, 0, tempArr, 0, Math.min(obj.length, newSize));

        return tempArr;

    }


    public static long[] copyOf(long[] obj) {