Java environment variable output

import java.util.*;;

public class mymain {

public static void main(String[] args) {
// TODO Auto-generated method stub

System.out.print(new Date());
Properties p=System.getProperties();
p.list(System.out);

Runtime rt=Runtime.getRuntime();
System.out.println("Total Memory="+rt.totalMemory()+"Free Memory="+rt.freeMemory());
}

}