.java

@Constraint(validatedBy = ...) 
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER} 
@Retention(RUNTIME) 
@Repeatable(MyCustomConstraint.List.class) 
public @interface MyCustomConstraint { 
    String myCustomValue(); 

    public @interface List {
       MyCustomConstraint[] value(); 
    } 
}