Java and Scala environment configuration in Linux

Java and Scala environment configuration in Linux

Recently, I have been studying a project on "natural language processing". In this project, we need to use Spark for programming. The Spark kernel is developed by the Scala language. Therefore, before using Spark, We must configure Scala and Scala runs on the JVM. Therefore, before configuring Scala, configure JDK first. The following is my personal summary.

I am a virtual machine on Windows 7, and the virtual machine system is CentOS7. After creating a virtual machine, it will bring an OpenJDK. My version is like this:

And decompress the package to the/Downloads directory. Go to the/etc/profile. d directory, create a path. sh script file, and open and configure the environment variables, such:

In the/etc/profile. d directory, type the source path. sh command to make the configuration take effect.

However, after the configuration is successful, type java-version in the console and you will still get the information in the first figure. After that, you need to uninstall the built-in JDK before configuring JDK.

Enter java in the console, as shown in:

But do not know this, only know that the Java development environment has been configured, So began to find the corresponding version of Scala, I downloaded the scala-2.10.5.tgz, and decompress in the/Downloads directory. Go to the/etc/profile. d directory, open the path. sh file, and configure Scala environment variables, as shown in:

In the/etc/profile. d directory, type the source path. sh command to make the configuration take effect.

Enter scala-version and scala in the console and you will get the content in the following two figures:

Now, the Java and Scala environment has been configured!

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