Environment Variables In Java

 

Environment Variables  are variables that are added in any Operating system that can be accessed from anywhere in OS without using the complete(Real) location.

 

In a java Application System.getenv(); is used to find out the system environment variables

Example:-

import java.util.Map;

public class EnvMap {
public static void main (String[] args) {
Map<String, String> env = System.getenv();
for (String envName : env.keySet()) {
System.out.format(“%s=%s%n”,
envName,
env.get(envName));
}
}
}