Objective 

Upon completion of this course, students should be able to:  

The J2SE Platform 5.0 for the Developer: Language Changes course provides students with a detailed look at the critical new features in Java 2 Platform, Standard Edition (J2SE platform) 5.0. The course topics include generics, the enhanced for loop, autoboxing and auto-unboxing, typesafe enumerators (enums), variable arguments (varargs), static imports, annotations (metadata modifiers), formatted input and output (I/O), and concurrency.    

Who can Benefit

Students who can benefit from this lecture series are Sun Professional Services consultants and architects, Sun product technical services engineers, Sun Java programmers, Sun Global Sales Organization (GSO) sales specialists, sales engineers, technical support engineers, and other Java developers. 

Prerequisites
To succeed in this course, students should be able to:  

• Understand the fundamentals of the Java programming language
  
• Understand the principles of object-oriented programming

Zugehörige Seminare 

Im Vorfeld

• SL-275: Java-Programmierung (SL-275)

Im Anschluss

• SL-285: Workshop zur Programmiersprache Java (SL-285)
• WJTB-310: Übersicht über die J2EE-Plattform für Manager (WJTB-310)
   

Course Content

Overview

• Describe the J2SE platform 5.0 language enhancements
  
• Describe the new tools available in J2SE platform 5.0
  
• Describe changes to the core libraries 

Generics

• Compare and contrast generic and non-generic collections
  
• Use the generic version of the Collections API
  
• Use generics with wildcards
  
• Write generic methods
  
• Integrate legacy (non-generic) code with generic code 

Enhanced for Loop

• Use the enhanced for loop with generics
  
• Use the enhanced for loop with arrays
  
• Understand nested iterations with the enhanced for loop

Autoboxing

• Describe manual boxing/unboxing and autoboxing/auto-unboxing
  
• Use autoboxing with generics and the enhanced for loop

Typesafe Enums

• Describe a common enumerated type pattern before J2SE platform 5.0 and the problems involved
• Create a simple enum 
• Create an enum with attributes and constructors 
• Create an enum with value-specific methods

The Variable Arguments Feature (Varargs)

• Describe the issues with variable-argument methods before J2SE platform 5.0 - Use variable argument methods 
• Create variable argument methods

Static Import 

• Describe the purpose of static imports
• Use static imports with constants (static attributes), static methods, and enums

Annotations

• Compare annotations before J2SE platform 5.0 with the new annotations
  
• Use built-in annotations
  
• Create your own annotation type
  
• Use your own annotation type in source code
  
• Use your own annotation type at runtime
  
• Describe the Annotation Processing Tool (apt)

Formatted Library

• Use the PrintWriter format and printf methods in the program
  
• Use the Scanner API
  
• Use the Scanner API with regular expressions

Concurrency Library

• Compare the concurrency utilities before J2SE platform 5.0 with the new concurrency utilities
  
• Use an Executor or ExecutorService for thread management
  
• Use Futures and Callables for asynchronous computation
  
• Use locks and conditions as an improvement over the wait and notify methods
  
• Use atomic variables an an improvement over volatile variables

Kurssprache deutsch, Unterrichtsmaterial überwiegend in englischer Sprache.