Example Oriented Java9

0. Prerequisites
0.1 JDK Install
0.2 IDE (Integrated Develop Environment) Install
1. Java Modular System
1.1 JDK9
1.2 Jmods
1.3 Module in Java
1.3.1 Implied Readability
1.3.2 Qualified Exports
1.3.3 Defining as a Service Consumer
1.3.4 Defining as a Service Provider
1.3.5 Strong Encapsulation
1.3.6 Unnamed Module
1.3.7 Automatic Module
2. Java9 Language Changes
2.1 Improvement of try-with-resources statements
2.2 Deprecation
2.3 Immutable Collections
2.3.1 Immutable Collections
2.3.2 Iteration
2.3.3 Immutable vs Unmodifiable
2.4 Process API – ProcessHandle
2.5 Concurrency Updates
2.5.1 CompletableFuture API Improvements
2.5.2 Flow API
2.6 StackWalker
2.7 Stream API Improvements
2.7.1 ofNullable
2.7.2 iterate
2.7.3 takeWhile
2.7.4 dropWhile
2.8 Optional API Improvements
2.8.1 stream
2.8.2 ifPresentOrElse
2.8.3 or
2.9 그 밖의 변화들
2.9.1 @SafeVarargs
2.9.2 Underscore character in field
2.9.3 private interface method
2.9.4 Diamond operator for anonymous class
3. JDK New Tools
3.1 jshell
3.2 jlink
3.3 jar – multiple jar release
3.4 javac – compile for old java version
3.5 jmod