Java New Features

New Features in java

Java 1.5 version:

• ·         for-each
• ·         var-args
• ·         Autoboxing and Unboxing
• ·         Queue
• ·         Enum
• Generics
• ·         Annotations
• ·         Static Import
• ·         Covariant return types

Java 1.6 version:

• ·         NavigableSet
• ·         NavigableMap

Java 1.7 version:

• ·         Switch can take String Argument
• ·         try with resource
• ·         try with catch where single catch can take multiple Exceptions
• ·         Enhancements in HashMap. 

Java 1.8 version:

• Lambda Expressions
• Java Stream API for collection classes
• Functional Interfaces
• Interface changes with default and static methods
• Predicate, function, consumer ==> Predefined functional interfaces
• Method reference, constructor reference by double colon (::) operator 
• Java Date Time API (joda.org==>Joda API)

Adv:

To simplify the programming

To utilize functional programming benifits

To enable parallel programming

Java 1.9 version:

• JShell
• JPMS(Java Platform Module System)
• JLink(Java Linker)==> customise jre==> for Microservices or portablity or mobiles
• Http/2 client API
• Process API Update
• private methods inside Interface
• try with resource enhancements
• Factory Methods to create unmodified collections
• Stream API Enhancements
• <> operator(is applicable to anonymous inner classes)
• SafeVarargs Annotations
• G1 GC(Garbage First Garbage Collector)

Java 10 version:

• var

Java 14 version:

• Switch, yield
  

  days = switch (month) {
              case JANUARY, MARCH, MAY, JULY, AUGUST, OCTOBER, DECEMBER -> 31;
  case JANUARY, MARCH, MAY, JULY, AUGUST, OCTOBER, DECEMBER -> {
                  System.out.println(month);
                  yield 31;
              }

Java 15 version:

• Text Blocks ["""  Write text block """ ]

Java 16 versions:

• Record instead of DTO/ lombok
• Pattern Match
  

  if (v instanceof Car c) 

Java 17 versions:

• Sealed Class
  

  public sealed class Vehicle permits Bicycle, Car {...}
  public final class Bicycle extends Vehicle {...}