As shown in the code
[Java] View plain copy/** * */ package pkg; import java.util.enumeration; import java.util.iterator; import java.util.map.entry; import java.util.properties; /** * @author qefee * */ public class showproperties { /** * @param args */ public static Void main (String[] args) { Properties properties = system.getproperties (); // show keys Showkeys (properties); // show values showvalues (properties); // show keys and values showkeysandvalues (properties); } /** * @param properties */ private static void Showkeys (properties properties) { Enumeration<?> enu = properties.propertynames (); while (Enu.hasmoreelements ()) { object key = enu.nextelement (); system.out.println (key); } } /** * @param properties */ private static void showvalues (properties properties) { Enumeration<Object> enu = Properties.elements (); while ( Enu.hasmoreelements ()) { object value = enu.nextelement (); syStem.out.println (value); } } /** * @ param properties */ private Static void showkeysandvalues (properties properties) {