JAVA深度和浅度克隆的区别

    在JAVA克隆对象不能简单的使用clone方法，clone方法只是进行浅克隆。请看下方：
 
深度克隆类：
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class DepthClone {

public  final static Object objectCopy(Object oldObj) {
Object newObj = null;

try {
ByteArrayOutputStream bo = new ByteArrayOutputStream();
ObjectOutputStream oo = new ObjectOutputStream(bo);
oo.writeObject(oldObj);//源对象
ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
ObjectInputStream oi= new ObjectInputStream(bi);
newObj = oi.readObject();//目标对象
} catch (IOException e) {
e.printStackTrace();
}catch (ClassNotFoundException e) {
e.printStackTrace();
}

return newObj;
}
}
 
浅度克隆类：
import java.io.Serializable;

public class SimpleClone implements Cloneable ,Serializable {

private static final long serialVersionUID = -7552721152118950502L;

public    String s = null;
    public Object o = null;
    public CloneObject cloneObject = null;


public SimpleClone(CloneObject cloneObject) {
this.cloneObject = cloneObject;
}

public Object clone() {
SimpleClone newSimpleClone =  null;
try {
/* 浅克隆 */
newSimpleClone = (SimpleClone)super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return newSimpleClone;
}
}

 
 克隆对象：
import java.io.Serializable;

public class CloneObject implements Serializable{

private static final long serialVersionUID = 4332788486669750696L;

private String name ;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}

 
克隆测试：
public class TestClone {

public static void main(String[] arg) {
CloneObject obj1 = new CloneObject();
obj1.setName("cloneOne");
CloneObject obj2 = new CloneObject();
obj2.setName("cloneTwo");

SimpleClone simpleClone1 = new SimpleClone(obj1);
SimpleClone simpleClone2 = new SimpleClone(obj2);

simpleClone1.s = "simpleClone1";
simpleClone1.o = "simpleClone1Object";

//simpleClone2 = (SimpleClone)simpleClone1.clone();

simpleClone2 = (SimpleClone)DepthClone.objectCopy(simpleClone1);

/* 如果是浅克隆， simpleClone1中的cloneObject会随着simpleClone2的cloneObject改变面改变*/
simpleClone2.cloneObject.setName("cloneThree");

System.out.println(simpleClone1.cloneObject.getName());
System.out.println(simpleClone2.cloneObject.getName());
}

}