All event listeners and models in one file?

I have one java file for all my event listeners of a programm and one java file for all my models. Is this good?
I create instances with new AllInOneHandler.MouseHandler() for example.
Or should I have one file for each event and each model?

Hi,
you should have one file for each class or interface - this gives you best control and reusability. Also when you have javadoc-comments in it, big files with many classes in it will become hard to edit.
When using one file for each class or interface you can import only the needed classes or interfaces instead of importing whole packages - so it is easier to see, what is exactly imported. As so a good structured application has many classes, where each of them is small (and in an own source file), you will have less problems during the evolution of your classes this way.
If you want to group some classes, why not use sub-packages for this purpose?
greetings Marsian

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Thank you, Kasyan.
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All event listeners and models in one file?

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