Java SE 7 (JDK 7) (July 2011): First version after Oracle purchased Sun Microsystem - aslo called Oracle JDK.
Java SE 6 (JDK 6) (December 2006): Renamed J2SE to Java SE (Java Platform Standard Edition).Introduced generics, autoboxing/unboxing, annotation, enum, varargs, for-each loop, static import. J2SE 5.0 (JDK 5) (September 2004): Officially called 5.0 instead of 1.5.J2SE 1.4 (JDK 1.4) (February 2002): Introduced assert statement, non-blocking IO ( nio), logging API, image IO, Java webstart, regular expression (regex) support.Also introduced Collection Framework and JIT compiler. Included JFC (Java Foundation Classes - Swing, Accessibility API, Java 2D, Pluggable Look & Feel, and Drag & Drop). Also released J2EE (Java 2 Enterprise Edition) and J2ME (Java 2 Micro Edition). J2SE 1.2 (JDK 1.2) (December 1998): Re-branded as "Java 2" and renamed JDK to J2SE (Java 2 Standard Edition).JDK 1.1 (February 1997): Introduced AWT event model, inner class, JavaBean, JDBC, and RMI.JDK 1.0 (January 1996): Originally called Oak (named after the oak tree outside James Gosling's office).Reference: "Java Version History" JDK Alpha and Beta (1995): Sun Microsystem announced Java in September 23, 1995. Since you are supposed to write Java Programs, you should install JDK, which includes JRE. JDK (Java Development Kit), which includes JRE plus the development tools (such as compiler and debugger), is needed for writing as well as running Java programs. JRE (Java Runtime) is needed for running Java programs. The JDK is freely available from Sun Microsystems (now part of Oracle).
The Java Development Kit (JDK), officially named "Java Platform Standard Edition" or " Java SE", is needed for writing Java programs.
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