April 2018
Intermediate to advanced
910 pages
33h 21m
English
JAR file URLs were, prior to Java 9, used by some APIs to identify specific files in the runtime image. These URLs contain a jar:file: prefix with two paths; one to the jar and one to the specific resource file within the jar. Here is the syntax for the pre-Java 9 JAR URL:
jar:file:<path-to-jar>!<path-to-file-in-jar>
With the advent of Java 9's modular system, containers will house resource files instead of individual JARs. The new syntax for accessing resource files is as follows:
jrt:/<module-name>/<path-to-file-in-module>
A new URL schema, jrt, is now in place for naming resources within a runtime image. These resources include classes and modules. The new schema allows for the identification of a resource without ...