JDK1.1 Release

• JDBC
• Inner Class
• Remote Method Invocation(RMI)
• Reflection API(Introspection only)

JDK1.2 Release

• Collection Framework
• Java String Memory Map for constants
• Just Intime Compiler(JIT Compiler)
• Java Signer for Signing jar files
• Java Swing Classes (JFC), Java 2D classes
• Java Plug-in
• JDBC Enhanancement(Scrollable ResultSet, Clob, Blob, BatchUpdate)
• Audio support in Applet

JDK1.3 Release

• Java Sound
• Jar Indexing

JDK1.4 Release

• XML Processing
• Login Api (commons login)
• JDBC3.0
• Assertion
• Preference API
• Java Plug-in
• Chained Exception
• IPV6 Support
• Regular Expression
• Image IO (Buffered Image class)
• IPV6 Support

JDK1.5 Release

• Generics
• Enhanced For Loop
• Auito Boxing / Unboxing
• Type Safe Enum
• Variable arguments (Var args)
• Static import
• Annotation (meta data)
• Instrumentation

JDK1.6 Release

• JDBC 4.0
• Java Compiler API
• Scripting language support
• Pluggable Annotation
• Native PKI, LDAP support
• Integrated webservices
• Lotmore enhanancement

JDK1.7 Release

• String support on case statement
• Type inferance for generic instance creation
• Multiple exception Handing
• Support for dynamic languages
• Try with resources
• Diamond Syntax
• Automatic Null Handing
• Binary Literals
• Support of runderscore in literal

JDK1.8 Release

• Lamda Expression
• Pipelines and Streams
• Date and Time API. time package
• Default methods (Default method in interface)
• Type Annotation
• Nashhorn JavaScript Engine
• Concurrent Accumulators
• Parallel Operation
• Permgen error removed

JDK1.9 Release

• New HTTP (2.0) Client
• @SafeVarargs Annotation
• Enhanced Method Handles
• New Version-String Scheme
• Мulti-Resolution Image API
• JShell: The Java Shell (REPL)
• Immutable Set
• Filter Incoming Serialization Data
• Stream API Improvement
• Installer Enhancement for Microsoft windows and many more
• Process API improvement
• Javadoc Search
• Enhancemnet on Try-With-Resources
• Interface Private Method
• Indify String Concatenation
• Unified JVM Logging
• Platform Module System (Project Jigsaw)]
• Compact Strings
• Optional to Stream
• Collection Factory Methods
• GC (Garbage Collector) Improvements
• Stack-Walking API
• Deprecate the Applet API
• Parser API for Nashorn

JDK1.10 Release

• Unmodifiable Collections
• copyOf() mehtod for map and Set
• Optional*.orElseThrow()
• Performance Improvements
• Container Awareness
• javah command line tool removed.
• Local-Variable Type Inference
• Garbage-Collector Interface
• Open JDK will be releaesd every 6 months.

JDK1.11 Release

• isBlank, lines, strip, stripLeading, stripTrailing, and repeat method in String class
• New readString and writeString methods fin the file class.
• The java.util.Collection interface contains a new default toArray method
• Local-Variable Syntax for Lambda
• class-file format is extended to support a new constant-pool form named CONSTANT_Dynamic.
• Java Flight Recorder (JFR) is now open-source in Open JDK, whereas it used to be a commercial product in Oracle JDK. JFR is a profiling tool .
• The Not Predicate Method
• The new HTTP client was introduced in Java 9. It has now become a standard feature in Java 11.
• New garbage collector Epsilon is available for use in Java 11
• Don't need to compile the Java source files with javac explicitly

JDK1.12 Release

• transform and indent method in String class

JDK1.13 Release

• The important preview feature is text blocks for multi-line Strings such as embedded JSON, XML, HTML, etc.
• Class data sharing (CDS) has been a important feature of Java HotSpot VM for a while now. It allows class metadata to be shared across different JVMs to reduce startup time and memory footprint. JDK 10