computer science

Java.net

Java.net is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Java.net rather than just read about it. In short: java.net was a Java technology related community website. It also offered a web-based source code repository for Java projects.

Key takeaways

Java.net belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Java.net to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Java.net from memory before moving on to harder problems.

Reference excerpt

java.net was a Java technology related community website. It also offered a web-based source code repository for Java projects. It was shut down in April 2017.

History java.net was announced by Sun Microsystems during JavaOne 2003. In January 2010, Oracle announced that it will migrate java.net portal to Project Kenai codebase, encouraging users to move their Kenai projects to java.net. In June 2016, Oracle announced that "the Java.net and Kenai.com forges will be going dark on April 28, 2017."

Javapedia The Javapedia project was launched in June 2003 during the JavaOne developer conference. It is part of java.net. The project aims at creating an online encyclopedia covering all aspects of the Java platform. The Javapedia project is openly inspired by Wikipedia. The prominent differences between Wikipedia and Javapedia include feature restrictions (for example, editing is open to registered users only), software used (TWiki), links (camelCase is used), and content licensing (Creative Commons 1.0 Attribution license).

Worked examples

Example 1 — a first encounter with Java.net

Start with the simplest possible case. Write down what Java.net claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Java.net before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Java.net ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Java.net

In research: Java.net appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Java.net in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Java.net is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computing stubs, Computing websites, Free software websites, so understanding it makes those chapters shorter.
In everyday life: Look for Java.net outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Java.net in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Java.net means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Java.net out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Java.net in simple terms?

java.net was a Java technology related community website. It also offered a web-based source code repository for Java projects.

Why does Java.net matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Java.net?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Java.net.