The return value is a java.util.Properties object.
The Properties class is a subclass of java.util.Hashtable
public class MainClass {
public static void main(String[] args) {
java.util.Properties properties = System.getProperties();
properties.list(System.out);
}
}
-- listing properties --
java.runtime.name=Java(TM) 2 Runtime Environment, Stand...
sun.boot.library.path=C:\Java_Dev\sdk\jdk\jre\bin
java.vm.version=1.5.0-b64
...