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What should I do if the linux jdk does not take effect?
Linux After modifying jdk, it does not take effect. I encountered it once before but didn't record it. I will record it this time.
1. Install jdk1.8.
2. Modify JAVA_HOME in /etc/profile to the new jdk path, and execute source /etc/profile.
3. Execute java -version. At this time, the jdk version is still shown as 1.7.
4. Execution:
which java which javac
Delete the java and javac files in the execution results of the above two instructions.
5. Execute:
ln -s $JAVA_HOME/bin/java /usr/bin/java ln -s $JAVA_HOME/bin/javac /usr/bin/javac
6. Execute:
source /etc/profile
7. Execute java -version, you can see that jdk is switched to version 1.8.
Note:
1. If the execution error is that the java file does not have permissions, first set the permissions for the java file: chmod u x java.
Recommended: "linux tutorial"
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