InvocationTargetException when saving in a file with an extension other than .csv

[bNobo]

Operating System

Windows 10

Steps to reproduce

1. Start SnakeAI
2. Click on Save Button
3. Enter a filename with an extension other than .csv, "model.dat" for e.g.
4. Click on Save

A file is created but its size is 0 Kb and the error bellow appears in console

Error

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at processing.core.PApplet.selectCallback(PApplet.java:6719)
at processing.core.PApplet.access$1(PApplet.java:6712)
at processing.core.PApplet$4.run(PApplet.java:6623)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.IllegalArgumentException: No extension specified for saving this Table
at processing.data.Table.save(Table.java:1184)
at processing.data.Table.save(Table.java:1175)
at processing.core.PApplet.saveTable(PApplet.java:6299)
at processing.core.PApplet.saveTable(PApplet.java:6276)
at SnakeAI.fileSelectedOut(SnakeAI.java:226)
... 21 more

Suggestion

The "save as" dialog should automatically add the .csv extension