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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

The --add-exports option

You can use --add-exports to break encapsulation so that you can use an internal API whose default is to be inaccessible. Here is the syntax:

    --add-exports <source-module>/<package>=<target-module>(     ,<target-module>)*

This command-line option gives code in the <target-module> access to types in the <source-module> package.

Another method of breaking encapsulation is with a JAR file's manifest. Here is an example:

    --add-exports:java.management/sun.management
The --add-exports command-line option should only be used if deemed absolutely necessary. It is not advisable to use this option except for short-term solutions. The danger of using it routinely is that any updates to referenced Internal APIs could result in ...
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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page