Shulou(Shulou.com)06/02 Report--

Installation of JDK

The system installation does not introduce too much, we look for the installation steps from the Internet, but I recommend that you choose the desktop graphical format for installation to facilitate part of the operation, and choose the English mode during the installation process. At the same time, I found that it is more convenient to use Oracle VM VirtualBox as a virtual machine tool than to use VM tools during the installation process.

Use the tool

System: CentOS7_64 bit (minimum configuration command window is recommended)

Jdk:jdk1.8.0_191

Virtual machine: Oracle VM VirtualBox

Documentation tool: EditPlus

File transfer tool: FileZilla

Tool for connecting Linux systems: Xshell5 (recommended, but used with caution, fee-based software)

Sunflower remote connection operation tool

File path

Link: https://pan.baidu.com/s/1qu71DDVXvU3kBEg-cgBpKw

Extraction code: hn1u

1. Upload jdk file (/ develop/package)

two。 Uninstall jdk (jdk version will be included on centOS)

1) query all java (use the minimum configuration command line to query the java and install it directly)

Rpm-qa | grep java

2) delete java other than three

Rpm-e-nodeps java-1.7.0-openjdk-1.7.0.111-2.6.7.8.el7.x86_64rpm-e-nodeps java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64rpm-e-- nodeps java-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64rpm-e-- nodeps java-1.7.0-openjdk-headless- 1.7.0.111-2.6.7.8.el7.x86_64

3) use the command to query after deletion

Rpm-qa | grep java

3. Decompress jdk

Tar-zxvf jdk-8u191-linux-x64.tar.gz-C.. /

4. Configure environment variables (using EditPlus)

Open / etc/profile and add the following code # java environmentexport JAVA_HOME=/develop/jdk1.8.0_191export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport PATH=$PATH:$JAVA_HOME/bin at the end

5. Make the modified configuration take effect.

Source / etc/profile

6. Check whether the configuration is successful

Java-version

Javac

Summary

The above is the detailed explanation of the Linux system (CentOS7 installation) installation JDK8 tutorial introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support to the website!

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