Java tutorial
import java.io.IOException; import java.io.Reader; import java.io.StringReader; import java.util.Iterator; import java.util.PropertyResourceBundle; import java.util.Set; public class Main extends PropertyResourceBundle { public Main(Reader reader) throws IOException { super(reader); } public static void main(String[] args) throws IOException { String fileContent = "s1=1\n" + "s2=Main\n" + "s3=Fri Jan 31 00:00:00 IST 3913"; StringReader reader = new StringReader(fileContent); PropertyResourceBundle bundle = new Main(reader); Set keySet = bundle.handleKeySet(); Iterator keys = keySet.iterator(); while (keys.hasNext()) { System.out.println("Bundle key: " + keys.next()); } } }