Update #0 - First Release

sources/main/java/javax/annotation/Nullable.java

@@ -0,0 +1,32 @@
+package javax.annotation;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifierNickname;
+import javax.annotation.meta.When;
+
+/**
+ * The annotated element could be null under some circumstances.
+ * <p>
+ * In general, this means developers will have to read the documentation to
+ * determine when a null value is acceptable and whether it is necessary to
+ * check for a null value.
+ * <p>
+ * This annotation is useful mostly for overriding a {@link Nonnull} annotation.
+ * Static analysis tools should generally treat the annotated items as though
+ * they had no annotation, unless they are configured to minimize false
+ * negatives. Use {@link CheckForNull} to indicate that the element value should
+ * always be checked for a null value.
+ * <p>
+ * When this annotation is applied to a method it applies to the method return
+ * value.
+ */
+@Documented
+@TypeQualifierNickname
+@Nonnull(when = When.UNKNOWN)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Nullable {
+
+}