NotSerializableExceptionExample.java

import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;

/**
 * Created by cattaka on 2016/11/03.
 */
public class NotSerializableExceptionExample {
    public static void main(String[] args) throws Exception {
        new NotSerializableExceptionExample().func();
    }

    public void func() throws Exception {
        System.out.println(new ArrayList<String>().getClass().toString());  // -> class java.util.ArrayList
        System.out.println(new ArrayList<String>() {}.getClass().toString());    // -> class NotSerializableExceptionExample$1
        System.out.println(new ArrayList<String>() {{ add("hoge"); }}.getClass().toString());    // -> class NotSerializableExceptionExample$2

        Object obj1 = new ArrayList<String>();
        Object obj2 = new ArrayList<String>() {{}};

        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        ObjectOutputStream oout = new ObjectOutputStream(bout);
        oout.writeObject(obj1); // OK
        oout.writeObject(obj2); // NotSerializableException
    }
}