In casual speech what does _ja na_ mean?

As in this example:

> 葉人をつかまえたん **じゃな**

Googling for it only turns up results for じゃない。
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2015-11-10T19:20:38.223
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words meaning colloquial-language dialects role-language
What does じゃな mean?
じゃ = だ in some dialects. So this is probably 葉人をつかまえたんだな.
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2015-11-10T21:41:52.487
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Like @himself noted, it does mean `葉人をつかまえたんだな`. While some dialects do have
this change, more importantly it's used to characterise the speaker as a
stereotypical wise old male (usually in anime or otherwise in a fiction).
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2015-11-10T22:58:39.197
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I believe the `んじゃな` in:

```

    葉人をつかまえたんじゃな
    
```

Is a localized way to say `んだ` which in turn is an everyday speech
abbreviation of the actual form of `のだ` where the `の` carries an explanatory
tone of the sentence based on context (i.e. the person is explaining something
based on a query from a previous sentence) and the `だ` represents the positive
state of being and in this case is a less formal way of saying `です`

Feel free to correct me if I'm wrong.
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2015-11-11T09:52:55.753
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