Can't uninstall Java under El Capitan
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Java for OS X 2014-001: How to re-enable the Apple-provided Java SE 6 web plug-in and Web Start features

Learn how to re-enable the Apple-provided Java SE 6 Java SE 6 web plug-in and Web Start features in OS X Lion and later.

If, after installing Java for OS X 2014-001 and the latest version of Java 7 from Oracle, you want to disable Java 7 and re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality, follow these steps.

Note: You must be logged in as an administrator. If prompted for your administrator password after a command, enter it and then press the Return or Enter key.


Open Terminal, located in the Utilities folder.
Enter this command, then press the Return or Enter key: 

sudo mkdir -p /Library/Internet\ Plug-Ins/disabled 

Enter this command, then press the Return or Enter key:

sudo mv /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/disabled

Enter this command, then press the Return or Enter key:

sudo ln -sf /System/Library/Java/Support/Deploy.bundle/Contents/Resources/JavaPlugin2_NPAPI.plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin 

To re-enable Java SE 6 Web Start, enter this command, then press the Return or Enter key:

sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Commands/javaws /usr/bin/javaws



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The following steps will undo the above commands and restore Java 7 in OS X Lion and later.


Disable Java SE 6 Web Start opening:


Enter this command, then press the Return or Enter key:

sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/javaws /usr/bin/javaws

When prompted, enter your administrator password, then press the Return or Enter key.

Re-enable the Java 7 applet plug-in by downloading and reinstalling the latest version of Oracle Java 7 JRE.