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Diffstat (limited to 'chapter13/README.md')
| -rw-r--r-- | chapter13/README.md | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/chapter13/README.md b/chapter13/README.md index 7feaba53..c54bfa70 100644 --- a/chapter13/README.md +++ b/chapter13/README.md @@ -52,9 +52,9 @@ Reference fields start out as null, doing anything with them will result in a co ```java struct Person { - String name; + String name; int age; - FamilyTree? tree; + FamilyTree? tree; } Person p = new Person; p.tree.la = null; // Accessing unknown field 'la' from 'null' @@ -129,9 +129,10 @@ N n = new N; return n.next; // Value reports as null, despite field typed as not-null ``` -As shown above, we explicitly allow not-null fields to be null initialized. -(as of chapter13) -We can't allow null to be stored into a not-null field, but we can allow a not-null field to be null(initially). +As shown above, we explicitly allow not-null fields to be null initialized (as +of chapter13). We can't allow null to be stored into a not-null field, but we +can allow a not-null field to be null (initially). This will be corrected in a +later chapter. ### Self-referential references |