package <%=packageName%>.config;

/**
 * Application constants.
 */
public final class Constants {

    private Constants() {
    }

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

}

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";

}

--- 
+++ 
@@ -3,7 +3,10 @@
 /**
  * Application constants.
  */
-public interface Constants {
+public final class Constants {
+
+    private Constants() {
+    }
 
     public static final String SPRING_PROFILE_DEVELOPMENT = "dev";
     public static final String SPRING_PROFILE_PRODUCTION = "prod";
Use a final class with private constructor instead of interface

This matches the AuthoritiesConstants