You can see there are two types of environment variables — User Variable and System Variable. By setting user variables, the only particular user is able to run a Java program.
Other users on the system can not access the Java installation file to run the Java program. If you want all users should be able to run Java application, set an environment variable in the System Variable. After this, all the user can run a Java program. Many programmers, knows how to set path in Java. But very few know why there is a need for Java environment variables setup. If you have not set a path variable, you need to provide a full path of java installed file to run every Java program on your system.
If you set the path variable, you can run a Java program from any file directory without specifying the complete Java tool path. I have already covered this question in my previous article in detail. You can refer it to find the difference between Path and Classpath variable.
Run the following commands. It will display all the directives in both path and classpath variables. This is the completed guide for JDK installation and setting Java variables. I tried to cover some frequently asked questions about the Java environment variables setup. If you have any more questions, feel free to write in the comment section below.
Mostly yes. The directory path can change based on the Operating System. It is always good to check if the path is valid or not before setting it as a value for environment variable.
Jack, it is really difficult to identify the problem with the information you shared. Need more detail. Save my name, email, and website in this browser for the next time I comment. What do you want to Learn Today? Code JAVA. Install downloaded JDK software on your system. Java Environment Variables Setup Steps After installation, we need to set path and classpath environment variable for Java. Follow the steps on your Windows system as given below.
Right-click on My Computer. Select Advanced System Setting. Click on Environment Variables at the bottom right corner. There will be two environment variables, one is the User variable and another is a System variable. If path and classpath variables are already present in System Variable, click on it to edit.
Otherwise, set a new variable. Which one do I have to set? If you set it as a user variable, it's only available to the current user. If you set it as a system variable, it's available for all users.
If it's your personal computer and you only have one account, it doesn't matter too much. I'd recommend setting it as a system variable. If you're just starting out, I wouldn't worry about it too much. It's not necessary until you start using more complex tools for development. On the other hand, for system variables, all users can use that variable. I would recommend setting it to the system variables for compatibility, accessibility and less chance of creating errors of variable not found.
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