How to check under linux install jdk path of

First, this problem has troubled me for a long time, because it is not familiar with the new system, a headache when configuring java environment variables, can not find the JDK location, okay google wave and found this method.

First make sure to install the JDK

java -version

java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)

Find java command position, pay attention to the graphical interface you can see this is a soft

which java

/usr/bin/java

 

Then look for java location

ls -l /usr/bin/java

lrwxrwxrwx 1 root root 22 6月  27  2018 /usr/bin/java -> /etc/alternatives/java

According directory points to look for jdk directory

ls -l /etc/alternatives/java

lrwxrwxrwx 1 root root 53 8月  24 19:16 /etc/alternatives/java -> /usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/jre/bin/java

Finally, to get the directory jdk

/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/jre/bin/java