Locate the version of Java that’s installed on your Mac OS X system.
1. Open the Utilities folder and run the Terminal application.
2. Type java -version and press Enter.
(space between java & -v important)
The version of Java that you have installed will then be displayed on the screen.
And is your MacBook Core Duo, or Core 2 Duo?
This release updates Java SE 6 to version 1.6.0_13, J2SE 5.0 to version 1.5.0_19, and J2SE 1.4.2 to 1.4.2_21.
This release is only for Mac OS X v10.5.7 and later versions of Mac OS X v10.5.
This release of J2SE 5.0 and J2SE 1.4.2 supports all Intel- and PowerPC-based Macs. Java SE 6 is available on 64-bit, Intel-based Macs only.
This was the last Java update for Leopard:
Update 10, 29 June 2011 - This release updates J2SE 5.0 to 1.5.0_30, and updates Java SE 6 to 1.6.0_26. J2SE 1.4.2 is no longer being updated to fix bugs or security issues and remains disabled by default in this update. Support for out-of-process Java applets on Mac OS X 10.5 Leopard has been removed with this update.
This release is only for Intel Macs running versions of Mac OS X 10.5. http://support.apple.com/kb/DL1359
Since August 2012 updates for Java (and especially Java Runtime Environment, which is what you actually need) must now be downloaded direct from Oracle:
(which is for Java 7)
Further information here:
and their FAQ’s:
At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware> and report this upto but not including the Serial#...
Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.21f4
Oh, JAVA 1.6 is 64 bit only, looks like you'll need 10.6 if a Core 2 Duo...
Snow Leopard/10.6.x Requirements...
* Mac computer with an Intel processor
* 1GB of memory (I say 4GB at least, more if you can afford it)
* 5GB of available disk space (I say 30GB at least)
* DVD drive for installation
* Some features require a compatible Internet service provider; fees may apply.
* Some features require Apple’s MobileMe service; fees and terms apply.
Which apps work with Mac OS X 10.6?...
Buy Snow Leopard > http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
Call Apple Sales...in the US: 1-800-MY-APPLE. Or Support... 1-800-275-2273