Using Java to find information about the local machine and java config in windows

javalocalsysteminfoexample.java

package basics;

import java.awt.List;
import java.io.PrintStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Properties;

public class JavaSystemInfoTools {
static String hostName;
	static public void printer(String in){
	System.out.println(in+":  "+System.getProperty(in));	
	}
	
	public static void main(String[] args) {
		
		printer("file.separator" );
		printer("Path.seperator" );
		printer("line.separator" );
		printer( "java.class.path");
		printer("java.home" );
		printer( "java.vendor");
		printer( "java.vendor.url");
		printer("os.arch" );
		printer("os.name" );
		printer("os.version" );
		printer("user.dir" );
		printer("user.home" );
		printer("user.name" );
	
		try
		{
		    InetAddress addr;
		    addr = InetAddress.getLocalHost();
		    hostName = addr.getHostName();
		}
		catch (UnknownHostException ex)
		{
		    System.out.println("Hostname can not be resolved");
		}
		
		
	
	ArrayList<String>strs = new ArrayList<String>();
	strs.addAll(Arrays.asList(System.getProperties().toString().split(",")));
    for (String string : strs) {
		System.out.println(string);
	}
	
	
	
	    
	}
}