How do you add environment variables in Java?

6 months ago

2 minutes

In Java, adding environment variables can be done through several methods.

set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_281

To add an environment variable in system properties:You can manually add an environment variable in system properties by right-clicking on “This PC” -> Properties -> Advanced system settings -> Environment Variables, then add a new environment variable in system variables, for example JAVA_HOME.
To modify the PATH environment variable:
Add the Java bin directory to the system’s PATH environment variable by locating the PATH variable and appending the Java bin directory, such as C:\Program Files\Java\jdk1.8.0_281\bin.
You can dynamically add environment variables using Java code, for example:

Map<String, String> env = System.getenv();
env.put("JAVA_HOME", "C:\\Program Files\\Java\\jdk1.8.0_281");

These are several common ways to set up Java environment variables, you can choose the method that suits your specific situation.