Bit vs 64bit

If you're using a 64-bit version of Windows, you may be tempted to install the 64-bit version of the Java Development Kit instead of the 32-bit version. Unfortunately, Eclipse 3.5 does not provide a 64-bit version of the Eclipse IDE for Java Developers package (see bug 293969).* There is a workaround (unzip the main package first and then unzip the 64-bit "classic" platform on top of that), but unless you really need 64-bit Java, it's easier to just use the 32-bit version of the JDK for now. A 64-bit package will be available in the next release of Eclipse (version 3.6, "Helios"), so this whole problem will go away soon.

*. https://bugs.eclipse.org/bugs/show_bug.cgi?id=293969

page4 has packages for Windows, Mac OS X, and Linux. After downloading the package that's right for you, unpack the .zip file to a temporary directory.

By default, the SDK will be expanded into a subdirectory like android-sdk-windows. Move that subdirectory underneath a permanent directory such as C:\Google or /Applications/Google. Then make a note of the full path so you can refer to it later as your SDK install directory.

No special install program is needed for either Eclipse or the SDK, but I do recommend you add the SDK's tools directory to your PATH.

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