import java.io.FileInputStream;
import java.util.Properties;

               public class PropertiesTest {
                   public static void main(String[] args) throws Exception {
                       // set up new properties object
                       // from file "myProperties.txt"
                       FileInputStream propFile = new FileInputStream("myProperties.txt");
                       Properties p = new Properties(System.getProperties());
                       p.load(propFile);

                       // set the system properties
                       System.setProperties(p);
                       // display new properties
                       System.getProperties().list(System.out);
                   }
               }