ubuntu设置java环境变量
设置系统环境
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk-7u7/bin/javac 1 sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-7u7/bin/java 1 sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk-7u7/bin/javaws 1
选择默认java
sudo update-alternatives --config javac sudo update-alternatives --config java sudo update-alternatives --config javaws