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PittJUG 3/30 - About JDK7

• http://bit.ly/ay4uMO
• http://tech.puredanger.com/java7/

http://openjdk.java.net/projects/jdk7/features/
 Still no JSR for JDK 7
Compressed 64-bit objectpointers
http://wikis.sun.com/display/HotSpotInternals/CompressedOops
 
Garbage-First GC (G1) Garbage First vs Concurrent Mark Sweep http://tech.puredanger.com/2008/05/09/javaone-g1-garbage-collector

• 25% performance increase
• Initially both will be available, eventually CMS will be replaced

JSR 292: VM support for non-Java languages (InvokeDynamic)

• Reduce the cost of supporting Dynamic languages lang
• Simple Language implementation http://github.com/headius/surinx

JSR 294: Language and VM support for modular programming

• Better support for things like OSGi (don't forget that April 27th is our OSGI presentation

JSR 308: Annotations on Java types

• ie., @NotEmpty List<@NotNull String> strings = ...
• http://www.michaelnygard.com/blog/2008/05/when_should_you_jump_jsr_308_t.html

JSR TBD: Small language enhancements (Project Coin)
http://blogs.sun.com/darcy/entry/project_coin_final_five
http://www.artima.com/forums/flat.jsp?forum=270&thread=266751

• Strings in switch
• Automatic Resource Management
  • Like the with() {} statement in .Net (try () {} )
• Improved Type Inference for Generic Instance Creation (diamond) Simplified Varargs Method Invocation

For example, consider the following assignment statement:

Map<String, List<String>> anagrams = new HashMap<String, List<String>>();

This is rather lengthy, so it can be replaced with this:

Map<String, List<String>> anagrams = new HashMap<>();

• An omnibus proposal for better integral literals
• Language support for Collections 
  • Collection Literals & Index access for List/Maps

List<String> strings = {"One", "Two", "Three"} ;
 
JSR TBD: Project Lambda - Closures

• http://openjdk.java.net/projects/lambda/

Modularization (Project Jigsaw) 

•  http://blogs.sun.com/mr/entry/jigsaw

Upgrade class-loader architecture
 
Method to close a URLClassLoader Unicode 5.1

•  http://blogs.sun.com/michaelmcm/entry/closing_a_urlclassloader

Concurrency and collections updates(jsr166y)

•  http://artisans-serverintellect-com.si-eioswww6.com/default.asp?W1

JSR 203: More new I/O APIs for the Java platform  (NIO.2)

•  http://openjdk.java.net/projects/nio/presentations/TS-5686.pdf

SCTP (Stream Control TransmissionProtocol)

•  http://bugs.sun.com/view_bug.do?bug_id=4927640

SDP (Sockets Direct Protocol)
Elliptic-curve cryptography (ECC)

 
Client Java changes

• XRender pipeline for Java2D- Improved support for modern GPUs
• Forward-port 6u10 deployment features
• Create new platform  APIs for 6u10 graphics features
• Nimbus look-and-feel for Swing
• Swing JLayer component

Web
Update the Upgrade the JAXP, JAXB, and JAX-WS APIs to the most recent stable versions
 
Dropped

• JSR 296: Swing application framework An API to define the basic structure of a typical Swing application, thereby eliminating lots of boilerplate code and providing a much-improved initial developer experience
• JSR 296 Swing JDatePicker component Add the SwingLabs JXDatePicker component to