Java tutorial
import java.util.Properties; import java.util.Set; class PropDemo { public static void main(String args[]) { Properties capitals = new Properties(); capitals.put("Illinois", "Springfield"); capitals.put("Missouri", "Jefferson City"); capitals.put("Washington", "Olympia"); capitals.put("California", "Sacramento"); capitals.put("Indiana", "Indianapolis"); Set states = capitals.keySet(); for (Object name : states) System.out.println(name + " / " + capitals.getProperty((String) name)); String str = capitals.getProperty("Florida", "Not Found"); System.out.println("The capital of Florida is " + str + "."); } }