Questions about using `assert` in Java

> Then I wonder if we should consider the size of a function with > assertions removed when making JIT inline decisions? Since > at JIT time I presume whether assertions are turned on or off > is known – or is it too inefficient to calculate this metric? Hi Andrew, This is also a good suggestion

答复: Questions about using `assert` in Java

> This makes me wonder if it is worth introducing a compiler flag > that would omit assert statements from the compiled bytecode > for this scenario. Hi Andrew, Maybe the first one of this FAQ could answer your question: https://docs.oracle.com/javase/8/docs/technotes/guides/language/assert.html

Re: Questions about using `assert` in Java

Hi Pavel, > There have been studies looking into correlation between assertion density > and fault/defect density. Here's one such study: "Assessing the Relationship > between Software Assertions and Code Quality: An Empirical Investigation". Thanks and yes! And there are also some more recent st

Re: Questions about using `assert` in Java

Hi John, > I believe this can be partially alleviated by extracting the asserts to a > method (partially as the call also increases method size). The optimizer > seems to be smart enough to not call the method if it does nothing > (when ea is disabled). Thanks a lot! Good to know that. I'm not su

Re: Questions about using `assert` in Java

Hi Alan, > You will find places in the JDK code, esp. in performance critical code, > where assertions are commented out. The reason is that asserts, even if > disabled, increase the method size and can impact inlining by the > compiler at run-time. So while useful when debugging some issue in suc

Re: Questions about using `assert` in Java

Regards, Daohan From: liangchenb...@gmail.com Sent: Sunday, July 16, 2023 7:09 To: Daohan Qu Cc: core-libs-dev@openjdk.org Subject: Re: Questions about using `assert` in Java Hi Daohan, assert keyword is safely usable within production code. I don't think it

Re: Questions about using `assert` in Java

Questions about using `assert` in Java

&type=code [2] https://docs.oracle.com/javase/8/docs/technotes/guides/language/assert.html Regards, Daohan Qu

Withdrawn: 8307512: Provide more information in message of NoSuchFieldException thrown by Class

On Fri, 23 Jun 2023 07:44:31 GMT, Daohan Qu wrote: > Similar to #11745 , this patch adds more information for > `NoSuchFieldException` thrown by `getField()` or `getDeclaredField()` of > `java.lang.Class`. The error message changes like the example below: > 1. For `getField()` >

Re: RFR: 8307512: Provide more information in message of NoSuchFieldException thrown by Class

On Fri, 23 Jun 2023 09:30:43 GMT, Chen Liang wrote: > I think a message like 'Class.field' is better, more consistent with > methodToString's behavior. Hi, @liach, thanks for your suggestions, this `Class.field` format is indeed more succinct. But I'm following this format (`NoSuchFieldError`

RFR: 8307512: Provide more information in message of NoSuchFieldException thrown by Class

Similar to #11745 , this patch adds more information for `NoSuchFieldException` thrown by `getField()` or `getDeclaredField()` of `java.lang.Class`. The error message changes like the example below: 1. For `getField()` Before this change: Exception in thread "main" java.lang.NoSuchFieldExceptio