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Installing Java 1.5 on Mac OS X

Follow these instructions if Java 1.5 is not installed or not the default version of Java on your Mac.

  1. Make sure that OS X version 1.4 or greater is installed.
  2. Is Java 1.5 installed? Open a Terminal window, and type the following:
    ls -l /System/Library/Frameworks/JavaVM.framework/Versions
    If 1.5 is among the versions listed, then the correct version is already installed. If not, then obtain (and install) Java 1.5 from Apple Support.
  3. Configuration Step 1:   set your Java Preferences.

    From the Finder, open Applications->J2SE5.0->Java Preferences.app.   Here you can set Java 1.5 as your default web start version. When the Java Preferences window appears, choose these settings:

    • Use version: J2SE 5.0
    • Java Application Runtime Settings:   make sure that J2SE 5.0 is on top.
  4. Test your installation with this small web start program.
  5. Configuration Step 2:   update your Java Version Path.

    Please beware! If the 'sudo' command is new to you, do not attempt this command -- instead seek help from your systems administrator. These operations are discussed here and here.)

    
    	# find out what 'CurrentJDK' symlink points to
    
    	  cd /System/Library/Frameworks/JavaVM.framework/Versions
    	  ls -l
    
    	# if it is pointing to 1.4, then remove that symlink
    
    	  sudo rm CurrentJDK
    
    	# recreate the symlink, but now have it point to version 1.5.0
    
    	  sudo ln -s 1.5.0 CurrentJDK
    	
  6. Test this change in a Terminal shell:
     java -version 
    It should now report version 1.5 or greater.
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