Java: Get the value of the environment variable PATH, TEMP, USERNAME

Java Basic: Exercise-90 with Solution

Write a Java program to get the value of environment variables PATH, TEMP, USERNAME.

Sample Solution:

Java Code:

import java.lang.*;

public class Exercise90 {
    public static void main(String[] args) {
        // Display the value of the specified environment variable "PATH"
        System.out.println("\nEnvironment variable PATH: ");
        System.out.println(System.getenv("PATH"));

        // Display the value of the specified environment variable "TEMP"
        System.out.println("\nEnvironment variable TEMP: ");
        System.out.println(System.getenv("TEMP"));

        // Display the value of the specified environment variable "USERNAME"
        System.out.println("\nEnvironment variable USERNAME: ");
        System.out.println(System.getenv("USERNAME"));
    }
}

Sample Output:

Environment variable PATH:                                             
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
:/usr/local/games                                                      
                                                                       
Environment variable TEMP:                                             
null                                                                   
                                                                       
Environment variable USERNAME:                                         
null

Flowchart:

Java Code Editor:

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