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Groups > comp.lang.java.programmer > #39590
| From | Arne Vajhøj <arne@vajhoej.dk> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Compare generics (that are numbers) |
| Date | 2020-07-29 13:21 -0400 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <rfsb7k$4gr$1@gioia.aioe.org> (permalink) |
| References | <87k0ym73id.fsf@munus.decebal.nl> |
On 7/29/2020 11:19 AM, Cecil Westerhof wrote:
> I have a class that starts with:
> abstract class CalcValuesGeneric<E> {
>
> E will be Integer, int, Float or float. (For now, but always a Number.)
> What is the best way to determine which of the two is lower?
T extends Number?
Example:
public class NumFun {
public static class Demo<T extends Number> {
public boolean gt(T a, T b) {
return a.doubleValue() > b.doubleValue();
}
}
public static void main(String[] args) {
Demo<Double> dd = new Demo<>();
System.out.println(dd.gt(1.0, 0.0));
System.out.println(dd.gt(1.0, 1.0));
System.out.println(dd.gt(0.0, 1.0));
Demo<Integer> di = new Demo<>();
System.out.println(di.gt(1, 0));
System.out.println(di.gt(1, 1));
System.out.println(di.gt(0, 1));
}
}
Arne
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Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 17:19 +0200
Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 13:21 -0400
Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 13:27 -0400
Re: Compare generics (that are numbers) Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-29 13:48 -0400
Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 20:42 +0200
Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 14:50 -0400
Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 21:53 +0200
Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 21:32 -0400
Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 11:33 +0200
Re: Compare generics (that are numbers) Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-30 09:03 -0400
Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 17:00 +0200
Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-30 09:21 -0400
Re: Compare generics (that are numbers) Silvio <silvio@internet.com> - 2020-07-30 08:51 +0200
Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 11:36 +0200
Re: Compare generics (that are numbers) Marcel Mueller <news.5.maazl@spamgourmet.org> - 2020-07-29 20:59 +0200
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