gilad4

stackoverflow.com

@Kaly380 not relevant to this issue but you can try this: ``` myMfxTextField.delegateSetTextFormatter(new TextFormatter(change -> { change.setText(change.getText().toUpperCase()); return change; })); ```

@palexdev The problem here lies in the static WeakHashMap in When class. The maps values items strongly reference their own keys. Taken from [WeakHashMap docs](https://docs.oracle.com/javase/7/docs/api/java/util/WeakHashMap.html) : > Implementation note: The...

@MohdBam Theres a nice tool called VisualVM for monitoring Java apps. In my case I used it to find objects that **should** have been garbage collected but apparently were not....