!!!gradle
[Java]

!!!Tips
!ERROR: JAVA_HOME is set to an invalid directory となる
*http://forums.gradle.org/gradle/topics/export_java_home_usr_lib_jvm_default_java_in_gradle_shell_script
 $ gradle -v
 
 ERROR: JAVA_HOME is set to an invalid directory: /usr/lib/jvm/default-java
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation.
::対応
*シンボリックリンクを貼る 
 $ sudo ln -s /usr/lib/jvm/java-7-oracle /usr/lib/jvm/default-java
::結果
 $ gradle -v
 
 ------------------------------------------------------------
 Gradle 1.4
 ------------------------------------------------------------
 
 Gradle build time: 2013年9月9日 20時44分25秒 UTC
 Groovy: 1.8.6
 Ant: Apache Ant(TM) version 1.9.3 compiled on April 8 2014
 Ivy: non official version
 JVM: 1.7.0_45 (Oracle Corporation 24.45-b08)
 OS: Linux 3.13.0-30-generic amd64