Jdk installation in CentOS 7, centosjdk

Jdk installation in CentOS 7, centosjdk

1. Create a java directory under the/usr/directory

[Root @ localhost ~] # Mkdir/usr/java
[Root @ localhost ~] # Cd/usr/java

2. Copy jdk1.8 to the java directory and decompress it to the current directory.

[Root @ localhost java] # tar-zxvf jdk-8u131-linux-x64.tar.gz

3. Set Environment Variables

[Root @ localhost java] # vi/etc/profile

I add the following information

Set java environment
JAVA_HOME =/usr/java/jdk1.8.0 _ 131
JRE_HOME =/usr/java/jdk1.8.0 _ 131/jre
CLASS_PATH =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar: $ JRE_HOME/lib
PATH = $ PATH: $ JAVA_HOME/bin: $ JRE_HOME/bin
Export JAVA_HOME JRE_HOME CLASS_PATH PATH

: Wq save and exit

Make the saved environment variables take effect

[Root @ localhost java] # source/etc/profile

Verify that jdk configuration takes effect

[Root @ localhost java] # java-version
Open JDK version "1.8.0 _ 102"
OpenJDK Runtime Environment (build 1.8.0 _ 102-b14)
OpenJDK 64-Bit Server VM (build 25.102-b14, mixed mode)