克隆工具類，進行深克隆,包括對象、集合

package com.JUtils.clone;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Collection;

/**
 * 克隆工具類，進行深克隆,包括對象、集合
 *
 */
public class CloneUtils {

    /**
     * 采用對象的序列化完成對象的深克隆
     * @param obj
     *             待克隆的對象
     * @return
     */
    @SuppressWarnings("unchecked")
    public static <T extends Serializable> T cloneObject(T obj) {
        T cloneObj = null;
        try {
            // 寫入字節流
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            ObjectOutputStream obs = new ObjectOutputStream(out);
            obs.writeObject(obj);
            obs.close();

            // 分配內存，寫入原始對象，生成新對象
            ByteArrayInputStream ios = new ByteArrayInputStream(out.toByteArray());
            ObjectInputStream ois = new ObjectInputStream(ios);
            // 返回生成的新對象
            cloneObj = (T) ois.readObject();
            ois.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return cloneObj;
    }

    /**
     * 利用序列化完成集合的深克隆
     *
     * @param collection
     *                     待克隆的集合
     * @return
     * @throws ClassNotFoundException
     * @throws java.io.IOException
     */
    @SuppressWarnings("unchecked")
    public static <T> Collection<T> cloneCollection(Collection<T> collection) throws ClassNotFoundException, IOException{
        ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
        ObjectOutputStream out = new ObjectOutputStream(byteOut);
        out.writeObject(collection);
        out.close();

        ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
        ObjectInputStream in = new ObjectInputStream(byteIn);
        Collection<T> dest = (Collection<T>) in.readObject();
        in.close();

        return dest;
    }
}