Windows
1. JAVA_HOME -->> E:\java-tools\Java\JDK8_64\jdk1.8.0_77
2. path -->> %JAVA_HOME%\bin
3. classpath -->> .;%JAVA_HOME%lib\dt.jar;%JAVA_HOME%lib\toos.jar;%JAVA_HOME%jre\lib\rt.jar;
MAC OS
cd /etc
vi profile 添加如下内容:
JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home
export JAVA_HOME
Linux(Ubuntu)