https://medium.com/@ttanawat/java-virtual-machine-%E0%B9%80%E0%B8%9B%E0%B8%A5%E0%B8%B5%E0%B9%88%E0%B8%A2%E0%B8%99%E0%B9%82%E0%B8%A5%E0%B8%81%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B9%80%E0%B8%A3%E0%B8%B2%E0%B8%AD%E0%B8%A2%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B9%84%E0%B8%A3-f99dba78d354