Not annotated parameter overrides @nonnullapi parameter

The ‘@Nonnull’ annotation is used in Java to indicate that a parameter or variable cannot be null. When a parameter or variable is marked as ‘@Nonnull’, it means that it should always have a non-null value assigned to it and can help prevent NullPointerExceptions in your code.

The ‘@nonnullapi’ parameter represents an API element that is expected to never provide null values to callers. This annotation is typically used on methods, indicating that the method should not return null, or on parameters, indicating that the parameter should not accept null values.

When using the ‘@nonnullapi’ annotation, if a null value is passed as an argument to a method parameter that is marked as ‘@Nonnull’, the compiler may generate a warning or error to indicate the issue. This can help catch potential bugs or mistakes where null values are not appropriately handled.

Here is an example to demonstrate the usage of ‘@Nonnull’ and ‘@nonnullapi’:

      
        public void printName(@Nonnull String name) {
          System.out.println("Name: " + name);
        }
        
        public String getPersonName(@nonnullapi Person person) {
          return person.getName();
        }