Centos7自带了OpenJDK1.8,我们不想要。想用JDK8,怎么办:
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Download JDK1.8 rpm:
wget http://download.oracle.com/otn-pub/java/jdk/8u101-b13/jdk-8u101-linux-x64.rpm
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Install JDK1.8:
sudo rpm -ivh jdk-8u101-linux-x64.rpm
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Switch from Open JDK to Oracle JDK:
sudo alternatives --config java
* (Select the item for jdk1.8) * - Check it:
which java
java -version
which javac
javac -version