it means when run javac or /usr/bin/javac ,it will run /usr/lib/jvm/java-6.31-oracle/bin/javac sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/java-6.31-oracle/bin/javac" 1
sudo update-alternatives --config javac
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it means when run javac or /usr/bin/javac ,it will run /usr/lib/jvm/java-6.31-oracle/bin/javac sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/java-6.31-oracle/bin/javac" 1
sudo update-alternatives --config javac
转载于:https://my.oschina.net/lyyrj/blog/415082