Records are called „methods“ in JShell

Wed Jul 15 20:47:07 UTC 2020

Thank you so much, Robert!

> Hopefully,
> 
> /set format mymode typeKind "record" record
> 
> Will fix your issue.

I had high hopes for that [1] but...

jshell> /set format mymode typeKind
|  /set format mymode typeKind "class" class
|  /set format mymode typeKind "interface" interface
|  /set format mymode typeKind "enum" enum
|  /set format mymode typeKind "annotation interface" annotation

jshell> public record ConstExpr(Expr e) implements Expr{}
|  created method ConstExpr(), however, it cannot be referenced until
class Expr is declared

jshell> /set format mymode typeKind "record" record

jshell> /set format mymode typeKind
|  /set format mymode typeKind "class" class
|  /set format mymode typeKind "interface" interface
|  /set format mymode typeKind "enum" enum
|  /set format mymode typeKind "annotation interface" annotation
|  /set format mymode typeKind "record" record

jshell> public record ConstExpr(Expr e) implements Expr{}
|  modified method ConstExpr(), however, it cannot be referenced until
class Expr is declared

----

[1] https://imgur.com/GaIgkOb

-------- Original Message --------
Subject: Re:_Records_are_called_„methods“_in_JSh ell
From: Robert Field <robert.field at oracle.com>
Date: Wed, July 15, 2020 11:09 am
To: Lingo Coder <plugins at lingocoder.com>, 
"kulla-dev at openjdk.java.net" <kulla-dev at openjdk.java.net>, 
"jorn.vernee at oracle.com" <jorn.vernee at oracle.com>

OK! There is the root of your issue.  You have your own mode, but it 
probably hasn't been updated for records.  You aren't using normal mode 
so, instead, show the output of:

 /set format mymode typeKind

Hopefully,

/set format mymode typeKind "record" record

Will fix your issue.

-Robert

On 7/15/20 7:33 AM, Lingo Coder wrote:
> Thank you Robert,
>
>> „...And send us what it prints...“
> You'll see below that right after I did `/set format normal typeKind`
> it still said, „created *method*...“. I also recorded it. [1]
>
> But then right after `/set feedback verbose`, it said „created
> *record*“.
>
> However, after an `/exit` and a relaunch of `jshell --enable-preview`,
> it
> reverted back to „created *method*...“/„dropped *method*... “.
>
> I _vaguely_ recall creating `mymode` and doing `/set feedback -retain
> mymode`
> way back in 2017 when JShell first came out. I think. I'm not 100% sure
> tho.
> So I'm guessing I need to do `/set feedback -retain verbose` to
> permanently
> get „created *record*...“ Correct?
>
> TIA.
>
> ----
> ...
>
> jshell> /set feedback
> | /set feedback -retain mymode
> |
> | Retained feedback modes:
> | mymode
> | Available feedback modes:
> | concise
> | mymode
> | normal
> | silent
> | verbose
>
> jshell> /set format normal typeKind
> | /set format normal typeKind "class" class
> | /set format normal typeKind "interface" interface
> | /set format normal typeKind "enum" enum
> | /set format normal typeKind "annotation interface" annotation
> | /set format normal typeKind "record" record
>
> jshell> public record ConstExpr(Expr e) implements Expr{}
> | created method ConstExpr(), however, it cannot be referenced until
> class Expr is declared
>
> jshell> /type
> | record ConstExpr
> | which cannot be referenced until class Expr is declared
>
> jshell> /types
> | record ConstExpr
> | which cannot be referenced until class Expr is declared
>
> jshell> /method
> | void print(boolean)
> | void print(char)
> | void print(int)
> | void print(long)
> | void print(float)
> | void print(double)
> | void print(char s[])
> | void print(String)
> | void print(Object)
> | void println()
> | void println(boolean)
> | void println(char)
> | void println(int)
> | void println(long)
> | void println(float)
> | void println(double)
> | void println(char s[])
> | void println(String)
> | void println(Object)
> | void printf(java.util.Locale,String,Object...)
> | void printf(String,Object...)
>
> jshell> /drop ConstExpr
> | dropped method ConstExpr()
>
> jshell> /set feedback verbose
> | Feedback mode: verbose
>
> jshell> public record ConstExpr(Expr e) implements Expr{}
> | created record ConstExpr, however, it cannot be referenced until
> class Expr is declared
>
> jshell> /type
> | record ConstExpr
> | which cannot be referenced until class Expr is declared
>
> jshell> class Expr{}
> | created class Expr
>
> jshell> /types
> | record ConstExpr
> | which cannot be referenced until this error is corrected:
> | interface expected here
> | public record ConstExpr(Expr e) implements Expr{}
> | ^--^
> | class Expr
>
> jshell> /drop Expr
> | dropped class Expr
>
> jshell> interface Expr{}
> | created interface Expr
> | update replaced record ConstExpr
>
> jshell> /types
> | record ConstExpr
> | interface Expr
>
> jshell> /drop ConstExpr
> | dropped record ConstExpr
>
> ...
>
> ----
> [1] https://imgur.com/ePyilYo
>
>
>
> -------- Original Message --------
> Subject: Re:_Records_are_called_„methods“_in_JSh ell
> From: Robert Field <robert.field at oracle.com>
> Date: Tue, July 14, 2020 8:07 pm
> To: Lingo Coder <plugins at lingocoder.com>,
> "kulla-dev at openjdk.java.net" <kulla-dev at openjdk.java.net>,
> "jorn.vernee at oracle.com" <jorn.vernee at oracle.com>
>
> I have a theory, maybe the following can illuminate...
>
> Couple more things to try:
>
> /set feedback
>
> /set format normal typeKind
>
> And send us what it prints.
>
> Also, after you have entered:
>
> public record ConstExpr(Expr e) implements Expr{}
>
> Type:
>
> /type
>
> and
>
> /method
>
> Separately, what do they print?
>
> Oh, and if you want to try one more thing:
>
> /set feedback verbose
>
> public record ConstExpr(Expr e) implements Expr{}
>
> Sorry, I don't have Windows, but I believe Jan has access.
>
> -Robert
>
>
> On 2020-07-14 18:35, Lingo Coder wrote:
>> Thanks Robert,
>>
>>> „...Can you do:
>>> jshell --full-version...“
>> I did that. It says jshell 15-ea+31-1502 [1]
>>
>> What version of Windows are you other guys trying this in? I'm on
>> Windows 7.
>>
>>> „...I'm guessing you may be using an older JDK...“
>> As I show in [1] and in earlier screen recordings, I completely
>> clear my $PATH to confirm that there is no other jshell.exe on
>> the $PATH.
>>
>> I have not installed any JDKs with an installer or anything
>> like that. For that reason, I rule out anything registry-related.
>>
>> I do have an early access release of 14-Valhalla
>> build 14-valhalla+4-55 on my workstation. But, that was
>> installed by simply unzipping the archive into a
>> jdk-14.L.world.Build.14-valhalla+4-55 folder. More importantly,
>> that build doesn't even have the records nor the sealed types
>> features.
>>
>> I also have GA releases of OpenJDK 12 & 13 in their own folders.
>> But again, not only are they isolated well out of the way of
>> the $PATH I run jshell 15 in, they don't even have records and
>> sealed types functionality.
>>
>> If _any_ other JDK were somehow in the $PATH, it would be
>> surprising if records and sealed types even worked _at all_;
>> let alone the misnaming as „methods“ issue Right? Please
>> correct me if I'm wrong?
>>
>>
>> [1] https://imgur.com/cMsAl5f
>>
>> -------- Original Message --------
>> Subject: Re:_Records_are_called_„methods“_in_JSh ell
>> From: Robert Field <robert.field at oracle.com>
>> Date: Tue, July 14, 2020 3:57 pm
>> To: kulla-dev at openjdk.java.net, jorn.vernee at oracle.com,
>> plugins at lingocoder.com
>>
>> I'm guessing you may be using an older JDK. I get:
>> jshell> public record ConstExpr(Expr e) implements Expr{}
>> | created record ConstExpr
>>
>> jshell> /drop ConstExpr
>> | dropped record ConstExpr
>>
>>
>> Can you do:
>> jshell --full-version
>>
>> Thanks,
>> Robert
>>
>>
>>