Java 9

Java Modules

Java modules are builing blocks of microservices

JPMS (Java Platform Module System)

allowing the user to create their modules to develop their applications.

TODO

JLINK

allowing the user to create executable to their applications.

jlink [options] --module-path modulepath --add-modules module [,module...]

TODO

JDEPS

TODO

JShell

Using Jshell, a program element like statement, declaration or expression can be immediately verified. Typically till Java 8, a developer needs atleast IDE help to validate any arbitary logic. Hence JShell gives hand to minimize the above effort.

How to Use

Type in command prompt, JShell window opens for you.

Optional class

• ifPresent(Consumer action)

• ifPresentOrElse(Consumer action, Runnable emptyAction)

  • eg., ifPresentOrElse(T -> {}, () -> {})