http://www.oracle.com/technetwork/cn/java/javase/downloads/jdk7-downloads-1880260.html
cd ~
vim .bash_profileexport JAVA_HOME=‘/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home‘
export PATH=$PATH:$JAVA_HOME/binsource .bash_profilejava -version原文：http://blog.csdn.net/lpjishu/article/details/52060358
