What are the steps to install JDK on CentOS?

1. Download the JDK installation package: Download the appropriate JDK installation package for CentOS from the Oracle official website or other trusted sources, such as JDK 8, JDK 11, etc.
2. Copy the installation package to the CentOS server: Use the scp command to copy the downloaded JDK installation package to the appropriate directory on the CentOS server.
3. Extract the installation package: Unzip the downloaded JDK installation package on the CentOS server using the following command.

tar -zxvf jdk-8u251-linux-x64.tar.gz

1. To set environment variables, modify the .profile or .bashrc file on the CentOS server and add the following environment variables:

export JAVA_HOME=/path/to/jdk
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

Next, execute the following command to apply the environment variables.

source ~/.bashrc

1. To verify the installation: Enter the following command in the terminal to check if JDK has been successfully installed:

java -version

If the installation is successful, the version information of JDK will be displayed.