I’ve installed JDK 1.7u7 from Oracle on my Mac OS X (Mountain Lion). I have multiple other JDKs installed. Gradle 1.2-rc-1 doesn’t seem to honor the default preferences (System -> Java Preferences):
$ which java /usr/bin/java $ java -version java version "1.7.0_07" Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode) $ ./gradlew --version ------------------------------------------------------------ Gradle 1.2-rc-1 ------------------------------------------------------------ Gradle build time: Tuesday, September 4, 2012 5:49:54 PM UTC Groovy: 1.8.6 Ant: Apache Ant(TM) version 1.8.4 compiled on May 22 2012 Ivy: 2.2.0 JVM: 1.7.0_05 (Oracle Corporation 23.1-b03) OS: Mac OS X 10.8.1 x86_64 $ /usr/libexec/java_home /Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home