Get OS version, name, architecture, and system properties in Java

In Java, we can use the os.name system property to find the OS name and version. We can also use the os.version system property to get the version.

To access the system properties, we can call System.getProperty with the property name that we need to access.

class GetOSDetails {
    public static void main( String args[] ) {
        //Operating system name
        System.out.println("Your OS name -> " + System.getProperty("os.name"));
        //Operating system version
        System.out.println("Your OS version -> " + System.getProperty("os.version"));
        //Operating system architecture
        System.out.println("Your OS Architecture -> " + System.getProperty("os.arch"));
    }
}

In the code above, we:

  • accessed the OS name. We used the System.getProperty method to pass the os.name string as the argument.

  • also accessed OS version and OS architecture through the os.version and os.arch system properties respectively.

In addition, we can:

  • use java.version to access Java version.

  • use java.home to access Java installation.

  • use user.name to access user account name.

class GetSystemProperties {
    public static void main( String args[] ) {
        //JRE version number
        System.out.println(System.getProperty("java.version")); 
        //Installation directory for Java Runtime Environment (JRE)
        System.out.println(System.getProperty("java.home")); 
        //User account name
        System.out.println(System.getProperty("user.name"));
    }
}

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