April 2018
Intermediate to advanced
910 pages
33h 21m
English
A hash code is an object-generated number that is stored in a hash table for rapid storage and retrieval. Every object in Java has a hash code. Here are some characteristics and rules for hash codes:
The Java 9 platform includes a modified hashCode method of java.security.CodeSource to optimize DNS lookups. These can be processor intensive, so a String version of the code source URL is used to compute hash codes.
The CodeSource class definition follows:
public class CodeSource extends Object implements Serializable
This class has the following methods: ...