checkers.nullness.quals
Annotation Type AssertNonNullIfFalse

@Documented
@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface AssertNonNullIfFalse

Indicates that if the method returns false, then the value expressions are non-null.

For instance, if AbstractCollection.isEmpty() is false, then PriorityQueue.peek() is nonnull. You can express this relationship as:

  @AssertNonNullIfFalse({"peek()"})
   public boolean isEmpty() { ... }
 

See Also:

NonNull, NullnessChecker

See the Checker Framework manual:

Nullness Checker

Required Element Summary

Modifier and Type	Required Element and Description
String[]	value The value can be: fields on receiver object.

Element Detail

value

public abstract String[] value

The value can be:

1. fields on receiver object. The value should simply be the field name, e.g. next, parent.
2. no-arg method members on the receiver object: The value would be the method signature, e.g. list()
3. method argument: The value should be # followed by the parameter index (index starts with 0), e.g. #2.