第五十二道Java小问题

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Arrays;

class Test
{
public static void main (String[] args) throws Exception
{

		ByteArrayOutputStream bo = new ByteArrayOutputStream();
		ObjectOutputStream Oo = new ObjectOutputStream(bo);
		ArrayList<String> a = new ArrayList<String>(Arrays.asList("A B"
				.split(" ")));
		Oo.writeObject(a);
		a.add("C");
		
		Oo.writeObject(a);
		Oo.close();
		ByteArrayInputStream io = new ByteArrayInputStream(bo.toByteArray());
		ObjectInputStream Oi = new ObjectInputStream(io);
		ArrayList<String> a1 = (ArrayList<String>) Oi.readObject();
		ArrayList<String> a2 = (ArrayList<String>) Oi.readObject();

		Oi.close();
		System.out.println(a1 == a2);

	}
}

 

请问以上程序的输出是: