Groups > comp.lang.java.programmer > #34207

Re: type question

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From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: type question
Date	Tue, 26 Apr 2016 19:32:35 -0400
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On 4/26/2016 2:04 PM, mcheung63@gmail.com wrote:
>     This line works:
>
> new Gson().fromJson(httpResult.content, new TypeToken<ArrayList<StockBalance>>() {
>
>
> Now i want to create a function with a parameter for the last one, and i failed
>
>
> function1(new ArrayList<StockBalance>().getClass());
>
> public static <T> T function1(Class<T> clazz) {
>    return new Gson().fromJson(httpResult.content, new TypeToken<ArrayList<StockBalance>>() {}.getType());
> }
>
>
> !!! the last parameter is wrong, able to compile but can't work.

You did not specify compile error message or provide enough
code so that we can compile.

But The function is declared to return T but fromJson return
blabla.getType() which is not necessarily T.

That looks very funky.

Arne

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type question mcheung63@gmail.com - 2016-04-26 11:04 -0700
  Re: type question Arne Vajhøj <arne@vajhoej.dk> - 2016-04-26 19:32 -0400

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