Detailed steps for installing JDK8 under Linux

First, login to Linux, switch to the root user

sudo su

Ii. setting up the Java installation directory in the USR directory

CD/usrmkdir java

Third, download the JDK

Login URL: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Select the corresponding JDK version to download.

Four, decompression

TAR-ZXVF xxx

V. Configuring Environment variables

Open/etc/profile

Nano/etc/profile

Add the following on the last side:

java_home=/usr/java/jdk1.8. 0_144classpath=.: $JAVA _home/Lib.tools.jarPATH= $JAVA _home/bin: $PATHexport java_home CLASSPATH PATH

Let the system reload the file after exiting with Ctrl+x: Source/etc/profile

VI. Configuring environment variables

Java-version

Detailed steps for installing JDK8 under Linux