这是一个关于如何深度克隆任何对象的简单示例: 首先实现serializable

public class CSVTable implements Serializable{
    Table<Integer, Integer, String> table; 
    public CSVTable() {
        this.table = HashBasedTable.create();
    }
    
    public CSVTable deepClone() {
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(this);

            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
            ObjectInputStream ois = new ObjectInputStream(bais);
            return (CSVTable) ois.readObject();
        } catch (IOException e) {
            return null;
        } catch (ClassNotFoundException e) {
            return null;
        }
    }

}

然后

CSVTable table = new CSVTable();
CSVTable tempTable = table.deepClone();

才能得到克隆体。

这是一个关于如何深度克隆任何对象的简单示例: 首先实现serializable

public class CSVTable implements Serializable{
    Table<Integer, Integer, String> table; 
    public CSVTable() {
        this.table = HashBasedTable.create();
    }
    
    public CSVTable deepClone() {
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(this);

            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
            ObjectInputStream ois = new ObjectInputStream(bais);
            return (CSVTable) ois.readObject();
        } catch (IOException e) {
            return null;
        } catch (ClassNotFoundException e) {
            return null;
        }
    }

}

然后

CSVTable table = new CSVTable();
CSVTable tempTable = table.deepClone();

才能得到克隆体。

使用XStream (http://x-stream.github.io/)。您甚至可以通过注释或显式地指定XStream类的属性名来控制可以忽略哪些属性。此外，您不需要实现可克隆的接口。

下面是一种通用的深度克隆方法，使用字节数组流进行对象序列化和反序列化(以避免写入文件)。

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

@SuppressWarnings("unchecked")
public static <T extends Serializable> T deepClone(T t) {
    try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);) {
        oos.writeObject(t);
        byte[] bytes = baos.toByteArray();
        try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
            return (T) ois.readObject();
        }
    } catch (IOException | ClassNotFoundException e) {
        throw new RuntimeException(e);
    }
}

1)

public static Object deepClone(Object object) {
   try {
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     ObjectOutputStream oos = new ObjectOutputStream(baos);
     oos.writeObject(object);
     ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
     ObjectInputStream ois = new ObjectInputStream(bais);
     return ois.readObject();
   }
   catch (Exception e) {
     e.printStackTrace();
     return null;
   }
 }

2)

    // (1) create a MyPerson object named Al
    MyAddress address = new MyAddress("Vishrantwadi ", "Pune", "India");
    MyPerson al = new MyPerson("Al", "Arun", address);

    // (2) make a deep clone of Al
    MyPerson neighbor = (MyPerson)deepClone(al);

这里，您的MyPerson和MyAddress类必须实现可序列化接口

使用Jackson序列化和反序列化对象。此实现不需要对象实现Serializable类。

  <T> T clone(T object, Class<T> clazzType) throws IOException {

    final ObjectMapper objMapper = new ObjectMapper();
    String jsonStr= objMapper.writeValueAsString(object);

    return objMapper.readValue(jsonStr, clazzType);

  }