Java tutorial
import java.io.IOException; import java.io.InputStream; import java.io.StringBufferInputStream; import java.util.Iterator; import java.util.PropertyResourceBundle; import java.util.Set; public class Main extends PropertyResourceBundle { public Main(InputStream stream) throws IOException { super(stream); } public static void main(String[] args) throws Exception { // Prepare content for simulating property files String fileContent = "s1=1\n" + "s2=Main\n" + "s3=Fri Jan 31 00:00:00 IST 3913"; InputStream propStream = new StringBufferInputStream(fileContent); // Create property resource bundle PropertyResourceBundle bundle = new Main(propStream); // Get resource key set Set keySet = bundle.handleKeySet(); Iterator keys = keySet.iterator(); while (keys.hasNext()) { System.out.println("Bundle key: " + keys.next()); } } }