No Slide Title

Source: java.sun.com
Topic: Java Programming

Short Desciption:
Forthcoming Java Programming Language Features. 2. A Brief History of the Java. . Programming Language. . 1995 (1.0)First public release ...

 

Content Inside:
No Slide TitlePage 1Forthcoming JavaProgrammingLanguage FeaturesJoshua Bloch and Neal GafterSenior Staff EngineersSun Microsystems Inc.Page 2Forthcoming Java Programming Language Features2A Brief History of the JavaProgramming Language1995 (1.0)First public release Hit a sweet spot!1997 (1.1)Nested classes added Support for function objects2001 (1.4)Assertions added Verify programmers understanding of codePage 3Forthcoming Java Programming Language Features3Watch Out for Tigers!Java 2 Platform Standard Edition Release 1.5Code name TigerBetaEarly 2004A major themeease of developmentPage 4Forthcoming Java Programming Language Features4Significant Language ChangesPlanned for TigerI. GenericsII. Enhanced for Loop ("foreach")III. Autoboxing/UnboxingIV. Typesafe EnumsV. VarargsVI. Static ImportVlI. AnnotationsPage 5Forthcoming Java Programming Language Features5Unifying ThemeDeveloperFriendlinessIncrease expressivenessIncrease safetyMinimize incompatibility No substantive VM changes All binaries most sources run unchanged New keywords kept to a minimum (1)Page 6Forthcoming Java Programming Language Features6DisclaimerAll subject to Java Community ProcessSM JSR014 Generics JSR175 Metadata (Annotations) JSR201 Remaining language changesFor more information http://www.jcp.orgParticipate!Page 7Forthcoming Java Programming Language Features7I. GenericsWhen you get an element from a collectionyou have to cast Casting is a pain Casting is unsafecasts may fail at runtimeWouldnt it be nice if you could tell the compilerwhat type a collection holds? Compiler could put in the casts for you Theyd be guaranteed* to succeed* Offer void where prohibited by law. Price does not include dealer preparation and licensing.Your mileage may vary. Cash value 1/20c.Page 8Forthcoming Java Programming Language Features8Filtering a CollectionToday// Removes 4letter words from c; elements must be stringsstatic void expurgate(Collection c) {for (Iterator i = c.iterator(); i.hasNext(); )if ( ...

 

 

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