package <%=packageName%>.config;

/**
 * Application constants.
 */
public interface Constants {

    public static final String SPRING_PROFILE_DEVELOPMENT = "dev";
    public static final String SPRING_PROFILE_PRODUCTION = "prod";
    public static final String SYSTEM_ACCOUNT = "system";

}

@@ -72,16 +72,43 @@
 lic 
+f
 in
-terfac
+al class Constants %7B%0A%0A    privat
 e Co
@@ -110,26 +110,34 @@
 te Constants
- %7B
+() %7B%0A    %7D
 %0A%0A    public

Use a final class with private constructor instead of interface