How Do I Set the JAVA_HOME Environment Variable on My Mac OS X 10.9?

Setting JAVA_HOME Environment Variable on Mac OS X 10.9

New to MacBook Pro and Java, you're facing challenges setting the JAVA_HOME environment variable. Despite consulting various guides, you've encountered obstacles with file editing and error messages.

Step-by-Step Guide to Setting JAVA_HOME in Mac OSX Environment:

1. Locate the Terminal: Open the Spotlight search bar (⌘ Space), type "Terminal," and launch it.

2. Identify Your Shell: Determine if you're using bash or zsh. Run the following command:

   echo $SHELL

   • If it returns "/bin/bash," you're using bash.
   • If it returns "/bin/zsh," you're using zsh.

3. Update Shell Configuration File:

   • For bash:

     echo export "JAVA_HOME=$( /usr/libexec/java_home )" >> ~/.bash_profile

   • For zsh:

     echo export "JAVA_HOME=$( /usr/libexec/java_home )" >> ~/.zshrc

4. Restart Your Shell: Type the following command to restart your shell:

   exec $SHELL

5. Verify JAVA_HOME: Run this command to check if JAVA_HOME is set correctly:

   echo $JAVA_HOME

6. Specify JDK Version (Optional): If you have multiple JDK versions installed, use the -v flag in java_home to specify the desired version:

   echo export "JAVA_HOME=$( /usr/libexec/java_home -v 1.7 )" >> ~/.bash_profile

Resolving Terminal Errors:

• Error 1 (File Editing Conflicts): If you see this message, someone else may be editing the file. Try quitting any editing sessions and running the commands again.
• Error 2 (Edit Session Crash): If you encounter this message, recover the changes using ":recover" or "vim -r /Users/Erwin/.bash_profile." Alternatively, delete the swap file to avoid future

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