Java Programming Wiki

This wiki is a user-maintained set of resources that include tutorials and examples of Java's features and programming best practices with Java. A Git repository has been created with copies of the Java Examples. You can find the repository at https://bitbucket.org/romoore/sakai_java_examples

Setting Up Your Environment

How to download, install, and configure Java and standard tools on various operating systems.

• Java on Ubuntu
• Eclipse on Ubuntu

Tutorials

The tutorials below provide complete examples of how to use various features of the Java programming language. All tutorial code should compile without errors using the Java Development Kit (JDK), version 1.7. The JDK is currently available for free download, but be sure to read all terms and conditions associated with the JDK. Download the JDK at http://www.oracle.com/technetwork/java/javase/downloads/index.html

• Simple Inheritance Tutorial - Provides a simple introduction to Java's approach to inheritance.
• Simple Thread Tutorial - Provides a simple introduction to multithreading and race conditions.
• Echo Server Tutorial - Provide a simple introduction to network socket programming by creating a telnet-friendly echo server. You could also use the Echo Client Tutorial to write your own client.
• Thread Pool Echo Server Tutorial - An example of using a thread pool to handle client connections within a server. The same basic functionality as Echo Server Tutorial, but handles multiple simultaneous clients.
• Simple Generics Tutorial - An example of using Java generics to create a simple Pair class.
• LRU Cache Tutorial - An example of how to write a simple LRU cache in Java using generics.
• Simple Label Tutorial - An introduction to using labels within Java.
• Java Util Logging Tutorial - An introduction to using the java.util.logging package for logging in your application.

Examples

The examples below provide short and convenient snippets of code that demonstrate a feature of Java. They are unlikely to compile on their own (see the Tutorials for full programs), but should be able to be inserted within a class or method without error. Be sure to check what imports are required and where the code should be placed!

• Bit-to-Boolean Conversion - An example of how to convert between bit-mapped byte arrays and boolean arrays.

External Resources

Useful tutorials, examples, references, and other resources that Java developers should be familiar with.

• Java Platform SE 7 http://docs.oracle.com/javase/7/docs/api/
• Java Tutorials http://docs.oracle.com/javase/tutorial/
  • Concurrency http://docs.oracle.com/javase/tutorial/essential/concurrency/index.html
  • Generics http://docs.oracle.com/javase/tutorial/java/generics/index.html
• Maintainable Code http://advogato.org/article/258.html

Articles About Java

Casual reading or insightful articles about Java from the perspective of developers, programmers, software engineers, and others.

• Stack Overflow discussion on Java's performance - http://stackoverflow.com/questions/2163411/why-did-java-have-the-reputation-of-being-slow