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‎README.md

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A project to explore more about the new features of Java 8, 9, ...
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## Resume
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[JDK Release Notes](https://www.oracle.com/java/technologies/javase/jdk-relnotes-index.html)
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* Java 8
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## Resume by Version
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* [Java 8](java-8/README.md)
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* API
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* Stream
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* Lambda
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* Java 9
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* Jigsaw
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* jlink
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* Segmented code cache
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* Stream API
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* Project Lambda
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* Repeating annotations
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* Java 10
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* [Java 9](java-9/README.md)
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* Milling Project Coin
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* Process API
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* Platform Logging API and Service
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* Concurrency improvements
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* Collections improvements
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* Project Jigsaw
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* Segmented code cache
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* JShell
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* much more (see JEPs)
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* [Java 10](java-10/README.md) (March 20th, 2018)
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* Process API improvements
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* Collections improvements
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* Application Class-Data Sharing
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* var
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* `var` keyword to declare variables
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* Java 11
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* [Java 11](java-11/README.md)
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* Removal of Java EE Modules, JavaFX and deprecated API
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* Http Client (incubator)
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* var in lambda expressions
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* API improvements
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* Null I/O
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* Java 12
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* [Java 12](java-12/README.md)
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* Switch expression (preview 1)
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* Compact Number Format
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* Collectors improvements
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* CompletableFuture improvements
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* CDS enable by default
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* New GC and improvements
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* Java 13
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* [Java 13](java-13/README.md)
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* Switch expression (preview 2)
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* Text blocks
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* String API updates
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* Dynamic CDS Archives
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* ZGC: Uncommit Unused Memory
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* Java 14 (May 17th, 2020)
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* [Java 14](java-14/README.md) (May 17th, 2020)
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* Switch expression (standard)
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* Pattern matching for `instanceof` (preview)
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* Text blocks improvements
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* Records (preview)
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* Helpful NullPointerExceptions
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* Helpful NullPointerExceptions
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* Packaging tool
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* JFR even streaming

‎java-10/README.md

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# Java 10
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## Features
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### Language
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* `var` keyword to declare variables
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* `var universeAnswer = 42`
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* Process API improvements
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* Collections API improvements
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### JVM
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* Application Class-Data Sharing
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## JEPs
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* [286](https://openjdk.java.net/jeps/286) - Local-Variable Type Inference
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* [296](https://openjdk.java.net/jeps/296) - Consolidate the JDK Forest into a Single Repository
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* [304](https://openjdk.java.net/jeps/304) - Garbage-Collector Interface
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* [307](https://openjdk.java.net/jeps/307) - Parallel Full GC for G1
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* [310](https://openjdk.java.net/jeps/310) - Application Class-Data Sharing
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* [312](https://openjdk.java.net/jeps/312) - Thread-Local Handshakes
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* [313](https://openjdk.java.net/jeps/313) - Remove the Native-Header Generation Tool (javah)
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* [314](https://openjdk.java.net/jeps/314) - Additional Unicode Language-Tag Extensions
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* [316](https://openjdk.java.net/jeps/316) - Heap Allocation on Alternative Memory Devices
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* [317](https://openjdk.java.net/jeps/317) - Experimental Java-Based JIT Compiler
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* [319](https://openjdk.java.net/jeps/319) - Root Certificates
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* [322](https://openjdk.java.net/jeps/322) - Time-Based Release Versioning
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## Links
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* [JDK 10 Documentation](https://docs.oracle.com/javase/10/)
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* [JDK 10 Documentation](https://docs.oracle.com/javase/10/)
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* [JDK 10 JEPs](https://openjdk.java.net/projects/jdk/10/)

‎java-11/README.md

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* `Predicate::not`
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* `Pattern::asMatchPredicate`
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## JEPs
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* [181](https://openjdk.java.net/jeps/336) - Nest-Based Access Control
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* [309](https://openjdk.java.net/jeps/335) - Dynamic Class-File Constants
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* [315](https://openjdk.java.net/jeps/333) - Improve Aarch64 Intrinsics
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* [318](https://openjdk.java.net/jeps/332) - Epsilon: A No-Op Garbage Collector
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* [320](https://openjdk.java.net/jeps/331) - Remove the Java EE and CORBA Modules
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* [321](https://openjdk.java.net/jeps/330) - HTTP Client (Standard)
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* [323](https://openjdk.java.net/jeps/329) - Local-Variable Syntax for Lambda Parameters
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* [324](https://openjdk.java.net/jeps/328) - Key Agreement with Curve25519 and Curve448
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* [327](https://openjdk.java.net/jeps/327) - Unicode 10
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* [328](https://openjdk.java.net/jeps/324) - Flight Recorder
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* [329](https://openjdk.java.net/jeps/323) - ChaCha20 and Poly1305 Cryptographic Algorithms
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* [330](https://openjdk.java.net/jeps/321) - Launch Single-File Source-Code Programs
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* [331](https://openjdk.java.net/jeps/320) - Low-Overhead Heap Profiling
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* [332](https://openjdk.java.net/jeps/318) - Transport Layer Security (TLS) 1.3
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* [333](https://openjdk.java.net/jeps/315) - ZGC: A Scalable Low-Latency Garbage Collector (Experimental)
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* [335](https://openjdk.java.net/jeps/309) - Deprecate the Nashorn JavaScript Engine
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* [336](https://openjdk.java.net/jeps/181) - Deprecate the Pack200 Tools and API
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## Links
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* [Java 11 Documentation](https://docs.oracle.com/en/java/javase/11/index.html)
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* [Java 11 JEPs](https://openjdk.java.net/projects/jdk/11/)
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* [Java 11 Migration Guide](https://blog.codefx.org/java/java-11-migration-guide/)
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* [Oracle's Z GC](https://wiki.openjdk.java.net/display/zgc/Main)
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* [Replacements for deprecated JPMS modules with Java EE APIs](https://stackoverflow.com/questions/48204141/replacements-for-deprecated-jpms-modules-with-java-ee-apis/48204154#48204154)

‎java-12/README.md

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## JEPs
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* [12](https://openjdk.java.net/jeps/12) - Preview language and VM features
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* [325](http://openjdk.java.net/jeps/325) - Switch expressions (preview)
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* [341](http://openjdk.java.net/jeps/341) - Default CDS Archives
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* [189](http://openjdk.java.net/jeps/189) - Low-Pause-Time GC (experimental)
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* [344](http://openjdk.java.net/jeps/344) - Abortable mixed collections for G1
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* [345](http://openjdk.java.net/jeps/346) - Promptly return unused memory from G1
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* [334](http://openjdk.java.net/jeps/334) - JVM Constants API
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* [189](https://openjdk.java.net/jeps/189) - Low-Pause-Time GC (experimental)
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* [230](https://openjdk.java.net/jeps/230) - Microbenchmark Suite
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* [325](https://openjdk.java.net/jeps/325) - Switch expressions (preview)
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* [334](https://openjdk.java.net/jeps/334) - JVM Constants API
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* [340](https://openjdk.java.net/jeps/340) - One AArch64
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* [341](https://openjdk.java.net/jeps/341) - Default CDS Archives
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* [344](https://openjdk.java.net/jeps/344) - Abortable mixed collections for G1
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* [345](https://openjdk.java.net/jeps/346) - Promptly return unused memory from G1
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## Warnings
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‎java-14/README.md

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* Promotion to standard
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* Text blocks improvements
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* added new flags
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* Patttern matching for `instanceof`
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* Pattern matching for `instanceof`
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* added as Preview
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* Records
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* added as Preview
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* JFR Event Streaming
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* [Here](https://github.com/flight-recorder/health-report) is a great example of a tool built
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### JVM
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* Helpful NullPointerExpections
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* flag to enable: `-XX:+ShowCodeDetailsInExceptionMessages`
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* Packaging tool to create self-contained Java applications
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* bin: `jpackage`
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* JFR Event Stream
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* [Here](https://github.com/flight-recorder/health-report) is a great example of a tool built
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‎java-8/README.md

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# Java 8 New Features
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# Java 8
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A project to explore more about the new features of Java...
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## Features
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- new methods from APIs
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- lambda expression to create anonymous method
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- lambda access scope (enclosing scope)
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- lambda expression to call constructors through method reference
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- Streams
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### Languages
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* new methods from APIs
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* Stream API
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* Project Lambda:
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* lambda expression to create anonymous method
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* lambda access scope (enclosing scope)
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* lambda expression to call constructors through method reference
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* Annotation improvements:
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* Annotations on Java Types
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* Repeating annotations
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* Method parameter reflection
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Lambda expression consiste of:
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- A comma-separated list of formal parameters enclosed in parentheses: (paramX, paramY) or singleParam or ()
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- An [weird] arrow token: ->
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- A body, which consists of a single expression or a statement block: {} or a single expression without ;
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Lambda expression consiste of:
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E.g.:
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* A comma-separated list of formal parameters enclosed in parentheses: (paramX, paramY) or singleParam or ()
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* An [weird] arrow token: ->
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* A body, which consists of a single expression or a statement block: {} or a single expression without ;
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- (x, y) -> return x + y
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- (x, y) -> { System.out.println(x); System.out.println(y); }
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- name -> System.out.println(name)
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E.g.:
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* (x, y) -> return x + y
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* (x, y) -> { System.out.println(x); System.out.println(y); }
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* name -> System.out.println(name)
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For further information read the Java Tutorial at section about [Lambda Expressions] (http://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html).
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## JEPs
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* [126](https://openjdk.java.net/jeps/126) - Lambda Expressions & Virtual Extension Methods
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* [138](https://openjdk.java.net/jeps/138) - Autoconf-Based Build System
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* [160](https://openjdk.java.net/jeps/160) - Lambda-Form Representation for Method Handles
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* [161](https://openjdk.java.net/jeps/161) - Compact Profiles
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* [162](https://openjdk.java.net/jeps/162) - Prepare for Modularization
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* [164](https://openjdk.java.net/jeps/164) - Leverage CPU Instructions for AES Cryptography
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* [174](https://openjdk.java.net/jeps/174) - Nashorn JavaScript Engine
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* [176](https://openjdk.java.net/jeps/176) - Mechanical Checking of Caller-Sensitive Methods
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* [179](https://openjdk.java.net/jeps/179) - Document JDK API Support and Stability
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* [142](https://openjdk.java.net/jeps/142) - Reduce Cache Contention on Specified Fields
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* [122](https://openjdk.java.net/jeps/122) - Remove the Permanent Generation
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* [173](https://openjdk.java.net/jeps/173) - Retire Some Rarely-Used GC Combinations
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* [136](https://openjdk.java.net/jeps/136) - Enhanced Verification Errors
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* [147](https://openjdk.java.net/jeps/147) - Reduce Class Metadata Footprint
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* [148](https://openjdk.java.net/jeps/148) - Small VM
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* [171](https://openjdk.java.net/jeps/171) - Fence Intrinsics
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* [153](https://openjdk.java.net/jeps/153) - Launch JavaFX Applications
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* [101](https://openjdk.java.net/jeps/101) - Generalized Target-Type Inference
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* [104](https://openjdk.java.net/jeps/104) - Annotations on Java Types
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* [105](https://openjdk.java.net/jeps/105) - DocTree API
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* [106](https://openjdk.java.net/jeps/106) - Add Javadoc to javax.tools
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* [117](https://openjdk.java.net/jeps/117) - Remove the Annotation-Processing Tool (apt)
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* [118](https://openjdk.java.net/jeps/118) - Access to Parameter Names at Runtime
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* [120](https://openjdk.java.net/jeps/120) - Repeating Annotations
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* [139](https://openjdk.java.net/jeps/139) - Enhance javac to Improve Build Speed
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* [172](https://openjdk.java.net/jeps/172) - DocLint
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* [103](https://openjdk.java.net/jeps/103) - Parallel Array Sorting
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* [107](https://openjdk.java.net/jeps/107) - Bulk Data Operations for Collections
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* [109](https://openjdk.java.net/jeps/109) - Enhance Core Libraries with Lambda
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* [112](https://openjdk.java.net/jeps/112) - Charset Implementation Improvements
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* [119](https://openjdk.java.net/jeps/119) - javax.lang.model Implementation Backed by Core Reflection
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* [135](https://openjdk.java.net/jeps/135) - Base64 Encoding & Decoding
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* [149](https://openjdk.java.net/jeps/149) - Reduce Core-Library Memory Usage
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* [150](https://openjdk.java.net/jeps/150) - Date & Time API
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* [155](https://openjdk.java.net/jeps/155) - Concurrency Updates
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* [170](https://openjdk.java.net/jeps/170) - JDBC 4.2
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* [177](https://openjdk.java.net/jeps/177) - Optimize java.text.DecimalFormat.format
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* [178](https://openjdk.java.net/jeps/178) - Statically-Linked JNI Libraries
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* [180](https://openjdk.java.net/jeps/180) - Handle Frequent HashMap Collisions with Balanced Trees
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* [127](https://openjdk.java.net/jeps/127) - Improve Locale Data Packaging and Adopt Unicode CLDR Data
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* [128](https://openjdk.java.net/jeps/128) - BCP 47 Locale Matching
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* [133](https://openjdk.java.net/jeps/133) - Unicode 6.2
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* [184](https://openjdk.java.net/jeps/184) - HTTP URL Permissions
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* [113](https://openjdk.java.net/jeps/113) - MS-SFU Kerberos 5 Extensions
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* [114](https://openjdk.java.net/jeps/114) - TLS Server Name Indication (SNI) Extension
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* [115](https://openjdk.java.net/jeps/115) - AEAD CipherSuites
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* [121](https://openjdk.java.net/jeps/121) - Stronger Algorithms for Password-Based Encryption
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* [123](https://openjdk.java.net/jeps/123) - Configurable Secure Random-Number Generation
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* [124](https://openjdk.java.net/jeps/124) - Enhance the Certificate Revocation-Checking API
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* [129](https://openjdk.java.net/jeps/129) - NSA Suite B Cryptographic Algorithms
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* [130](https://openjdk.java.net/jeps/130) - SHA-224 Message Digests
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* [131](https://openjdk.java.net/jeps/131) - PKCS#11 Crypto Provider for 64-bit Windows
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* [140](https://openjdk.java.net/jeps/140) - Limited doPrivileged
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* [166](https://openjdk.java.net/jeps/166) - Overhaul JKS-JCEKS-PKCS12 Keystores
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* [185](https://openjdk.java.net/jeps/185) - Restrict Fetching of External XML Resources
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## Links
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* [JDK 8 Documentation](https://docs.oracle.com/javase/8/)
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* [JDK 8 Documentation](https://docs.oracle.com/javase/8/)
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* [JDK 8](https://openjdk.java.net/projects/jdk8/)
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* [Java Programming Language Enhancements](https://docs.oracle.com/javase/8/docs/technotes/guides/language/enhancements.html#javase8)

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