Installed Java SE 1.7.0u10 from Oracle w/ their installer package
Downloaded and unpacked Eclipse Juno (4.2.1)
Double click Eclipse
All these hacks does not work on mac Mavericks, But a simple and efficient solution is found here it worked with me like a charm.
Note: a drawback of this solution is when you check your java version using "java -version" command, it will read Java 1.6