Java Object Deep Copy deepCopy(T originalObject)

Description

Copies a file into another one

License

LGPL

Parameter

Parameter	Description
inputFileName	a parameter
outputFileName	a parameter
createFolder	if true creates the destination folder if necessary

Exception

Parameter	Description
Exception	an exception

Declaration

public static <T> T deepCopy(T originalObject) 

Method Source Code

//package com.java2s;
/**/*from  w  ww.j  av  a  2  s. co m*/
 *  Copyright (C) 2008-2015  Telosys project org. ( http://www.telosys.org/ )
 *
 *  Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (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.gnu.org/licenses/lgpl.html
 *
 *  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.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Main {
    /**
     * Copies a file into another one 
     * @param inputFileName
     * @param outputFileName
     * @param createFolder if true creates the destination folder if necessary
     * @throws Exception
     */
    public static <T> T deepCopy(T originalObject) {
        Object clone = null;
        ObjectOutputStream oos = null;
        ObjectInputStream ois = null;
        try {
            //--- 1) Serialize the object in memory 
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(baos);
            // serialize and pass the object
            oos.writeObject(originalObject); // recursively traverses the object's graph
            oos.flush();
            //--- 2) Deserialize the object from memory 
            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
            ois = new ObjectInputStream(bais);
            // return the new object
            //@SuppressWarnings("unchecked")
            //T clone = (T) ois.readObject(); 
            clone = ois.readObject();
            //return clone ;
        } catch (IOException e1) {
            throw new RuntimeException("IOException in deepCopy", e1);
        } catch (ClassNotFoundException e2) {
            throw new RuntimeException("ClassNotFoundException in deepCopy", e2);
        } finally {
            close(oos);
            close(ois);
        }

        @SuppressWarnings("unchecked")
        T typedClone = (T) clone;

        return typedClone;
    }

    private static void close(Closeable stream) {
        if (stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                // No action 
            }
        }
    }
}

Related

1. deepCopy(Object orig)
2. deepCopy(Object original)
3. deepCopy(Object toCopy)
4. deepCopy(Serializable source)
5. deepCopy(T item)
6. deepCopy(T src)
7. deepCopy(T t)
8. deeplyCopy(Serializable serializable)