Features of all Java Versions

* J2SE Version 8

• Lambda Expressions
• Pipelines and Streams
• Date and Time API
• Default Methods
• Type Annotations
• Nashhorn JavaScript Engine
• Concurrent Accumulators
• Parallel operations
• PermGen Error Removed
• TLS SNI

* J2SE Version 7

• String in switch statement
• Binary Literals
• The try-with-resources
• Caching Multiple Exceptions by single catch 
• Underscores in Numeric Literals 
•  Diamond Syntax

* J2SE Version 6

    * Pluggable Annotation Processing API
    * Common Annotations
    * Java API for XML Based Web Services - 2.0
    * JAXB 2.0
    * Web Services Metadata
    * Streaming API for XML
    * XML Digital Signature
    * Java Class File Specification Update
    * Java Compiler API
    * JDBC 4.0
    * Scripting in the Java Platform

* J2SE Version 5

• Generics
• Enhanced for Loop
• Autoboxing/Unboxing
• Typesafe Enums
• Varargs
• Static Import
• Metadata (Annotations)
• Instrumentation

* J2SE Version 1.4

• XML Processing
• Java Print Service
• Logging API
• Java Web Start
• JDBC 3.0 API
• Assertions
• Preferences API
• Chained Exception
• IPv6 Support
• Regular Expressions
• Image I/O API

* J2SE Version 1.3

• Java Sound
• Jar Indexing
• Performance enhancements including the Hotspot virtual machine. 

* J2SE Version 1.2, also called the Java 2 Platform

• Collections framework.
• Java String memory map for constants.
• Just In Time (JIT) compiler.
• Jar Signer for signing Java ARchive (JAR) files.
• Policy Tool for granting access to system resources.
• Java Foundation Classes (JFC) which consists of Swing 1.0, Drag and Drop, and Java 2D class libraries.
• Java Plug-in
• Scrollable result sets, BLOB, CLOB, batch update, user-defined types in JDBC.
• Audio support in Applets

* JDK Version 1.1 :

• JDBC (Java Database Connectivity)
• Inner Classes
• Java Beans
• RMI (Remote Method Invocation)
• Reflection (introspection only)
• Improvements include better event handling, inner classes, improved JVM

* JDK Version 1.0 :

    * Netscape 2.0-4.0 included Java 1.0.
    * Microsoft and other companies licensed Java.