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Re: Best way to make a hashcode?

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On 8/27/2019 7:59 AM, Eric Douglas wrote:
> On Monday, August 26, 2019 at 7:04:02 PM UTC-4, Arne Vajhøj wrote:
>> Have tried letting your IDE generate hashCode and equals based
>> on the fields you want?
> 
> Didn't realize it could do that...so here's what it comes up with.

> public class TestClass1 {
>       String s1 = "abc";
>       String s2 = "def";
>       String s3 = "ghi";
>       int x = 1;
>       int y = 2;
>       float z = 3;
> 
>       @Override
>       public int hashCode() {
>            final int prime = 31;
>            int result = 1;
>            result = prime * result + ((s1 == null) ? 0 : s1.hashCode());
>            result = prime * result + ((s2 == null) ? 0 : s2.hashCode());
>            result = prime * result + ((s3 == null) ? 0 : s3.hashCode());
>            result = prime * result + x;
>            result = prime * result + y;
>            result = prime * result + Float.floatToIntBits(z);
>            return result;
>       }

Until proven otherwise I would assume that is "good enough".

Arne

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Thread

Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-26 13:51 -0700
  Re: Best way to make a hashcode? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-08-26 17:41 -0400
    Re: Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-27 06:24 -0700
      Re: Best way to make a hashcode? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-08-27 09:39 -0400
        Re: Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-27 07:29 -0700
          Re: Best way to make a hashcode? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-08-27 11:49 -0400
            Re: Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-27 11:05 -0700
              Re: Best way to make a hashcode? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-08-27 15:16 -0400
                Re: Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-27 13:04 -0700
                Re: Best way to make a hashcode? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2019-08-27 23:51 +0200
    Re: Best way to make a hashcode? Silvio <silvio@internet.com> - 2019-08-28 01:27 +0200
      Re: Best way to make a hashcode? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2019-09-06 19:42 +0200
  Re: Best way to make a hashcode? Arne Vajhøj <arne@vajhoej.dk> - 2019-08-26 19:03 -0400
    Re: Best way to make a hashcode? Eric Douglas <e.d.programmer@gmail.com> - 2019-08-27 04:59 -0700
      Re: Best way to make a hashcode? Arne Vajhøj <arne@vajhoej.dk> - 2019-08-27 21:08 -0400
        Re: Best way to make a hashcode? ross.finlayson@gmail.com - 2019-09-05 20:27 -0700
  Re: Best way to make a hashcode? trisha guillot <guillottrisha347@gmail.com> - 2020-01-18 07:25 -0800

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