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Operating System Information
In this example we are learn how we can get information about our operation system.

Operating System Information

In this example we are learn how we can get information about our operation system. In this example we are getting the OS name, its version and architecture of OS. We are using getProperty(String key) to get the property of the OS. To get OS name we have key value os.name,to get version we have os.version and to get architecture we have os.orch.

The System class contains several useful class fields and methods. It cannot be instantiated.

The method and its keys:

String getProperty(String key):
This method is used to get the system property.

S/No.	Key	Description
1	java.version	The version of Java Runtime Environment.
2	java.vendor	The name of Java Runtime Environment vendor
3	java.vendor.url	The URL of Java vendor
4	java.home	The directory of Java installation
5	java.vm.specification.version	The specification version of Java Virtual Machine
6	java.vm.specification.vendor	The name of specification vendor of Java Virtual Machine
7	java.vm.specification.name	Java Virtual Machine specification name
8	java.vm.version	JVM implementation version
9	java.vm.vendor	JVM implementation vendor
10	java.vm.name	JVM implementation name
11	java.specification.version	The name of specification version Java Runtime Environment
12	java.specification.vendor	JRE specification vendor
13	java.specification.name	JREspecification name
14	java.class.version	Java class format version number
15	ava.class.path	Path of java class
16	java.library.path	List of paths to search when loading libraries
17	java.io.tmpdir	The path of temp file
18	java.compiler	The Name of JIT compiler to use
19	java.ext.dirs	The path of extension directory or directories
20	os.name	The name of OS name
21	os.arch	The OS architecture
22	os.version	The version of OS
23	file.separator	The File separator
24	path.separator	The path separator
25	line.separator	The line separator
26	user.name	The name of account name user
27	user.home	The home directory of user
28	user.dir	The current working directory of the user

The code of the program is given below:


public class OpertingSystemInfo 

{

    public static void main(String[] args)

    {

        String nameOS = "os.name";        

        String versionOS = "os.version";        

        String architectureOS = "os.arch";

    System.out.println("\n    The information about OS");

        System.out.println("\nName of the OS: " + 

System.getProperty(nameOS));

        System.out.println("Version of the OS: " + 

System.getProperty(versionOS));

        System.out.println("Architecture of THe OS: " + 

System.getProperty(architectureOS));

    }

}

The output of the program is given below:

C:\convert\rajesh\completed>javac OpertingSystemInfo.java

C:\convert\rajesh\completed>java OpertingSystemInfo

    The information about OS

Name of the OS: Windows 2000
Version of the OS: 5.0
Architecture of The OS: x86

Download this example.

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