Cannot Run Java 1.7 Despite Installing

For a certain application, I need to use the Java Runtime Environment 1.7. I've installed the latest JRE from Oracle's website. After this, the "Java" control panel that appears says I only have Java 1.7.0_25 installed. However, when I use the "java -version" command in Terminal, it claims I'm using Java 1.6.0_51.
How can I disable or uninstall the 1.6 JRE, so Terminal will say I'm using 1.7?
Using the latest version of Mountain Lion.
Thanks in advance!

Hello,
The bug that is causing this error message is fixed in 8u20. Please download the 8u20 EA. When 8u20 is released you will be prompted to install the final version.
You can find the link to download and more information on java.com: https://www.java.com/en/download/help/mac_10_10.xml
-Roger

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