JAVA_利用流克隆List

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class Launch {
	public static void main(String[] args) {
		List<Bean> beanList = new ArrayList<Bean>();
		
		for (int i = 0; i < 10; i++) {
			Bean bean = new Bean();
			bean.id = i;
			beanList.add(bean);
		}
		System.out.println();
		List<Bean> newList = null;
		try {
			ByteArrayOutputStream bo=new ByteArrayOutputStream();//1行
			ObjectOutputStream os = new ObjectOutputStream(bo);
			os.writeObject(beanList);//3行
			
			ByteArrayInputStream bo1 = new ByteArrayInputStream(bo.toByteArray());//1行
			ObjectInputStream os1 = new ObjectInputStream(bo1);
			newList = (List<Bean>)os1.readObject();
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		for (int i = 0; i < beanList.size(); i++) {
			Bean oldBean = beanList.get(i);
			Bean newBean = newList.get(i);
			System.out.println("old:" + oldBean + "  new:" + newBean);
		}
	}
}

class Bean implements Serializable {
	private static final long serialVersionUID = 4948388455081444528L;
	public int id = 0;
}