How to Download Java API Documentation
API stands for Application Programming Interface. The API of a programming language is almost always the first place you'll look if you need help. It is a reference to the collection of libraries, functions, applications and examples of the programming language. The Java API is readily available online; however, you might want to have an offline copy of it on your computer (you can, after all, program Java while not online). For this, you will need to download the API files from the Java website, and store them locally on your home computer.
Instructions
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Navigate to the "Java SE Downloads" website.
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Next to "Java SE 6 Documentation" click "Download."
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Click the check box next to "Java SE Development Kit Documentation 6u18," and then click "Download Selected with Sun Download Manager."
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Accept the Sun Download Manager License agreement.
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Select a Directory for your Downloaded files at the top of the download manager, and hit "OK."
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Click the "Start" button to make your download begin. It should take only a couple of minutes.
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Navigate to the folder you downloaded the file (named "jdk-6u18-docs.zip"), and double-click the file to unzip it.
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Double-click the "docs" folder. Inside the docs folder, double-click the "index.html" file. Your web browser will open the page, but you will not be online.
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Click the "API, Language, and VM Specs" link at the top of the page.
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Click the "Java Platform API Specification" link. You will then be taken to the Java API Documentation, running locally on your computer.
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