Error:Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0

아래와 같이 에러가 발생하면

[INFO] Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0
[INFO]  at java.lang.ClassLoader.defineClass1(Native Method)
[INFO]  at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
[INFO]  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[INFO]  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
[INFO]  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
[INFO]  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[INFO]  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
[INFO]  at java.security.AccessController.doPrivileged(Native Method)
[INFO]  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[INFO]  at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
[INFO]  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
[INFO]  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
[INFO]  at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] -

app gradle setting을 다음과 같이

buildToolsVersion "24.0.0 rc2"

로

buildToolsVersion "23.0.2"

변경하면 해결된다.