CODE EXAMPLE FOR JAVA

java check if bundle has property

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import java.util.Locale;
import java.util.ResourceBundle;

public class ResourceBundleDemo {
   public static void main(String[] args) {

      // create a new ResourceBundle with specified locale
      ResourceBundle bundle = ResourceBundle.getBundle("hello", Locale.US);

      // print the text assigned to key "hello"
      System.out.println("" + bundle.getString("hello"));

      // check if the bundle contains "bye" key
      System.out.println("" + bundle.containsKey("bye"));

      // check if the bundle contains "hello" key
      System.out.println("" + bundle.containsKey("hello"));
   }
}