gistfile1.txt

package com.schneiderelectric.test2;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.nio.charset.StandardCharsets;
import java.time.Instant;

public class Test {

    public static void main(String[] args) throws Exception {
        long t0 = System.currentTimeMillis();
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        for (int i = 0; i < 5_000_000; i++) {
            byteStream = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(byteStream);
            out.writeObject(new ExampleClass());
            byteStream.reset();
            //System.out.println("Java serialization: " + byteStream.toByteArray().length);
        }
        System.out.println(System.currentTimeMillis() - t0);
        long t1 = System.currentTimeMillis();
        ObjectMapper mapper = new ObjectMapper();
        for (int i = 0; i < 5_000_000; i++) {
            byte[] jsonBytes = mapper.writeValueAsString(new ExampleClass()).getBytes(StandardCharsets.UTF_8);
            //System.out.println("Json serialization: " + jsonBytes.length);
        }
        System.out.println(System.currentTimeMillis() - t1);
    }

    public static class ExampleClass implements Serializable {

        @JsonProperty("anInstant")
        private Instant anInstant = Instant.now();
        @JsonProperty("aNumber")
        private int aNumber = 12;
        @JsonProperty("aString")
        private String aString = "Hello world";
    }
}