java.io.NotSerializableException example

gistfile1.txt

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;


class Fragment implements Serializable {

	private String data;
	
	private Lambda lambda = new Lambda();
	
	private class Lambda {
		
	}
}

public class Main {

	public static void main(String[] args) {
		Fragment fragment = new Fragment();
		
		try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("state.dat"));){
			oos.writeObject(fragment);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}