Install jdk1.8 under Linux in three minutes

1. Install jdk

1.1 yum install 1.8.0 version openjdk

[root@localhost ~]# yum install java-1.8.0-openjdk* -y

After the execution, the installation will be performed automatically, and the installation is as follows:

1.2 View the jdk version number

1.3 View the installation path

Because the whole process is automatically installed, after installation, the default jre and jdk environment are in the /usr/lib/jvm path:

2. Environment configuration

2.1 Configure jdk environment

Change setting:

vi /etc/profile

Modify as follows:

export JAVA_HOME=/usr/lib/jvm/java

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/jre/lib/rt.jar

export PATH=$PATH:$JAVA_HOME/bin

Configuration takes effect:

. /etc/profile

As shown below:

2.2 View variables

2.3 Successful verification

Enter the commands javac and java, the configuration is successful as shown below: