olemus
Java: jadastuse laiendvariant
= an extension of serialization in Java

ülevaateid
https://community.oracle.com/tech/developers/discussion/2610042/difference-between-serialization-vs-externalization

https://www.edureka.co/blog/externalization-in-java/

http://java11s.blogspot.com.ee/2012/02/externalization-in-java.html

http://www.javavillage.in/java-externalization.php

https://www.codejava.net/java-se/file-io/understanding-java-externalization-with-examples