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Java 9 Cookbook by Nick Samoylov, Mohamed Sanaulla

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Comparing JDK 8 and JDK 9

Due to the application of a modular system to JDK under Project Jigsaw, there have been a few changes in the JDK directory structure installed in your systems. In addition to these, there were a few changes undertaken to fix the JDK installation structure, which dates back to the times of Java 1.2. This has been deemed to be a golden opportunity by the JDK team to fix the issues with the JDK directory structure.

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