Generate JHipster 9.3.0 baseline application

src/main/java/com/example/questionbank/config/Constants.java

@@ -0,0 +1,15 @@
+package com.example.questionbank.config;
+
+/**
+ * Application constants.
+ */
+public final class Constants {
+
+    // Regex for acceptable logins
+    public static final String LOGIN_REGEX = "^(?>[a-zA-Z0-9!$&*+=?^_`{|}~.-]+@[a-zA-Z0-9-]+(?:\\.[a-zA-Z0-9-]+)*)|(?>[_.@A-Za-z0-9-]+)$";
+
+    public static final String SYSTEM = "system";
+    public static final String DEFAULT_LANGUAGE = "en";
+
+    private Constants() {}
+}