Beginner Tutorial! JDK Installation and Configuration Method on Linux Server

This article shares the JDK installation and configuration method on Linux for everyone's reference, the specific content is as follows

First, environment

VMware12 Pro

CentOS-6.7-i386-bin-DVD1

jdk-8u151-linux-i586

Second, detailed installation steps prerequisite: need to uninstall JDK on your Linux

rpm-qa| grepjdk will display all the installation packages that contain the string jdk

rpm-e--nodeps corresponding to each package name will uninstall the corresponding package

After that, if java -version shows

that's all. It's done.

I have installed JDK before1.7Therefore, I need to uninstall, and if you haven't installed it, start from the following

1download JDK from the official website

Download address

you need to select the small circle marked in red in the picture, which means you accept the license agreement

Because my virtual system is32bit, so I downloaded32bit JDK, according to your specific situation86Represents32bit system, x64Represents64bit system.

Don't know what system the server is, just use this command:

2. Upload and Unzip JDK

Someone may not know what the rz command is. Why don't you have it?

This is a simple upload and download tool. If you haven't installed it before, you can install it, it's very useful

Check if lrzsz is installed before installation:

rpm –q l lrzsz

If not installed, you can use the following command to install:

yum install lrzsz –y

After that, you can use rz to upload local files to the current directory of the server, and sz followed by the specified file directory can download it to the local machine

Alright, after uploading JDK, it looks like this:

Unzip, etc., a bit slow, so it's unzipped to the current directory:

3. Move the location

To facilitate management in the future, I moved the JDK directory to a different location and renamed it

Now let's go and see the JDK, ok, JDK1.8It already exists, that JDK1.7Don't worry, it's one I installed before

The ls | grep jdk command is a pipeline command. It lists the files in the current directory and searches for those containing jdk to display

4. Configure Environment Variables

First use vim to open/etc/profile

Add it at the bottom of the file, save and exit

Run the following command to make the configuration take effect immediately

Now through java -version and javac -Check the version command, the two results are the same

OK, JDK configuration completed!

That's all for this article. I hope it will be helpful to everyone's learning and that everyone will support the Yelling Tutorial more.

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