Open a terminal Type: /usr/libexec/java_home -v 1.7
Windows Open Eclipse Window -> Preferences -> Java -> Installed JREs Add Navigate to JRE location – C:\Program Files\Java\… Mac Open Eclipse Eclipse -> Preferences -> Java -> Installed JREs Add Navigate to JRE location – /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home Set Java Compliance Level …