Using Immutables with cryo

Ser.java

package org.immutables.samples.json.immutables;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.serializers.JavaSerializer;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.Serializable;
import org.immutables.value.Value;

@Value.Immutable(singleton = true)
public interface Ser extends Serializable {}

class UseKryo {
  public static void main(String... args) throws IOException {
    ImmutableSer ser = ImmutableSer.of();
    
    Kryo kryo = new Kryo();

    // this is optional if you want to preserve singleton
    kryo.register(ImmutableSer.class, new JavaSerializer());

    Output output = new Output(new FileOutputStream("file.bin"));

    kryo.writeObject(output, ser);
    output.close();

    Input input = new Input(new FileInputStream("file.bin"));
    ImmutableSer sss = kryo.readObject(input, ImmutableSer.class);
    input.close();

    System.out.println(sss);
    System.out.println(sss == ser); // should be true if JavaSerializer is used (readResolve magic generated by Immutables)
  }
}