Then open the Terminal and run the following commands: Open this 'ist' file in a text editor of your choice and replace the contents with the 'ist' listed below. Inside the 'Contents' folder inside, there is a 'ist' file, which is plain text. When you download and install Minecraft.app into /Applications, you can control-click or right-click on the Minecraft.app file and 'Show Package Contents'. This assumes you have the Java 7 JDK installed from:
These instructions are for Mac OS X 10.7.3 and later (those that can run Oracle's Java 7).