nmatt opened a new issue, #4782:
URL: https://github.com/apache/netbeans/issues/4782
### Apache NetBeans version
Apache NetBeans 15
### What happened
Example Java source code:
```java
public final class Example
{
private final List<String> items; // (*)
public Example(List<String> items)
{
// defensive copy:
this.items = Collections.unmodifiableList(new ArrayList<>(items));
}
public List<String> getItems()
{
return items;
}
@Override
public String toString()
{
return items.isEmpty() ? "(no items)" : String.join(", ", items);
}
}
```
NetBeans shows a warning "the collection is never added to" on the `items`
field (*), This is triggered by the `isEmpty()` invocation in `toString()`.
However, NetBeans should either notice that this is a read-only collection
(difficult), or else notice that the field is exposed to client code through
`getItems()`, which allows client code to (attempt to) add to the list.
NetBeans 12.2 (which I used previously) does not show that warning, although
it does support the same hint ("Unbalanced read/write with collections"). So
this appears to be a regression.
### How to reproduce
See example source code above.
### Did this work correctly in an earlier version?
Apache NetBeans 12.3 or earlier
### Operating System
Windows 10 Enterprise 22H1
### JDK
Oracle JDK 8u271
### Apache NetBeans packaging
Apache NetBeans provided installer
### Anything else
_No response_
### Are you willing to submit a pull request?
No
### Code of Conduct
Yes
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