mac本上jdk和sdk的配置

1.1 JDK下载http://www.oracle.com
1.2 vi .bash_profile 编辑环境变量配置
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home
PATH=$JAV{A}_{H}OME/bin:$PATH:.
CLASSPATH=$JAV{A}_{H}OME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH
1.3 source .bash_profile 使得配置生效
1.4 echo $JAVA_HOME 显示刚才配置的路径
1.5安装androidstudio并下载配置SDK
File->OtherSetting->default project structure