What to do if linux jdk does not take effect

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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