Java 8 - New Updates and Why It Matters?
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Java 8 introduced several new features that improved the Java programming language. Key new features included lambda expressions to treat functions as data, improvements to annotations to allow deeper integration with compilation, and default methods to allow interfaces to be extended without breaking existing code. The libraries were also updated with new packages for streams, date-time handling and unsigned integers, improving functionality.
Java 8 - New Updates and Why It Matters?
- 1. Java 8 – Why it matters? - Jean-François Bilodeau (Senior Instructor) The Smarter Everyday project is owned and operated by CTE Solutions Inc.
- 6. Java 8 – Why it matters? - Jean-François Bilodeau (Senior Instructor) The Smarter Everyday project is owned and operated by CTE Solutions Inc.
- 7. What's new? New language features New library features Under the hood improvements
- 8. New Language Features Lamdba expressions Annotation Improvements Default methods
- 9. Lambda Expression Finally! (Most requested feature after generics) Treat functions as data
- 10. Annotations Improvements Annotations can be used with any type declaration • Allows deeper integration with compile-type verification • Can be used with new operator, type cast, throws keyword, etc. Annotations can be repeated • Use the Repeatable annotation when declaring
- 11. Default Method Allows for extending an interface without breaking existing code As a consequence, allows multiple inheritance
- 12. Other Language Features Parameter name reflexion • Need to compile with -parameters option Improved type inference for generics
- 13. New Library Features Rehauled collections & Streams Date-Time Package Unsigned integer arithmetics
- 14. Streams Java 8 provides functional-style operation on collections Provides sequential or parallel map-reduce transformations New package: java.util.stream
- 15. Date-Time Package New package: java.time Can finally forget about java.util.Date and java.util.Calendar classes Rich and fluent set of classes Consistent design
- 16. Unsigned Integer Arithmetics Java doesn't support unsigned integers (uint) The java.lang.Integer and java.lang.Long class extended to support unsigned integers operations • To/Parse operations • Arithmetic
- 17. Under the Hood Removal of PermGen Space AES hardware support Static-link JNI Client-side TLS 1.2 enabled by default
- 18. Additional Improvements New Nashorn scripting engine Performance improvements New/updated tools Details: http://www.oracle.com/technetwork/java/javase/8- whats-new-2157071.html
- 19. Java 8 New Features Thank you!
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