32And64BitMacOS

How do I know if I am running 32 or 64 bit Mac?

To install JDK 6 that is distributed by Apple via Software Update, Apple requires that your machine is running OS X 10.5 ("Leopard") on a machine with a 64-bit CPU or OS X 10.6 ("Snow Leopard").

To see what Java version is set as the default, see JavaAndMacOS

You cannot install JDK 6 via Software Update if you are running a version of OS X older than 10.5 or if your machine is a 32-bit Mac ("Intel Core") and you are running OS X 10.5 ("Leopard"). If you cannot install JDK 6 via Software Update, you need to install a different distribution of JDK 6 (e.g SoyLatte JDK 6, see JavaFXAndJDK6On32BitMacOS)

If you run Mac OS X 10.5 on a 64-bit CPU ("Intel Core 2"), you can directly install the Apple JDK 6 ("Java for Mac OS X 10.5")

If you run Mac OS X 10.6 on any (32bit or 64bit) Intel hardware, you can directly install the Apple JDK 6 ("Java for Mac OS X 10.6") or use Software Update to get latest JDK 6 version.

How to check if your Mac is a 32-bit or 64-bit

  • Choose Apple menu > About this Mac.

If the processor is the Intel Core 2 it supports 64-bit.

Open Terminal

How can I tell whether I have Mac OS 10.4 ("Tiger") or Mac OS 10.5 ("Leopard")?

  • Choose Apple menu > About this Mac

For more information about Java on Mac OS, see http://developer.apple.com/java/
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\ For more documentation about using NetBeans on Mac OS X, see NetBeansMacOSX

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