From ethan at mccue.dev  Sat Feb  5 21:48:46 2022
From: ethan at mccue.dev (Ethan McCue)
Date: Sat, 5 Feb 2022 16:48:46 -0500
Subject: dev.java feedback
Message-ID: <CA+NR86hYO3V9UZRveRokAsokDzouxyKyKPXme73qcgwzHBXn6w@mail.gmail.com>

Hi all,

I've gone through a chunk of the dev.java site and marked up feedback in
this Figma

https://www.figma.com/file/pTnVYD5WHWxsIDoBDuUaFt/dev.java-feedback

I know it's infinitely easier to be a critic than a creator, but I think
that there are very real structural problems with the site as it exists
right now and I don't yet have a better mechanism to affect change.

The biggest and most pervasive issue is that there does not seem to be a
clearly defined audience.

Tutorials will shift rapidly between being targeted at
* Total beginners
* Beginners to Java who might know another language
* Intermediates looking for reference material
* Experts looking to catch up on new features

and the quality of content suffers massively as a result, ending up not
really being useful for any group.

I am also cc-ing the discuss mailing list since I think this sort of thing
is relevant to the community as a whole.

From chad.arimura at oracle.com  Mon Feb  7 18:57:16 2022
From: chad.arimura at oracle.com (Chad Arimura)
Date: Mon, 7 Feb 2022 18:57:16 +0000
Subject: dev.java feedback
In-Reply-To: <CA+NR86hYO3V9UZRveRokAsokDzouxyKyKPXme73qcgwzHBXn6w@mail.gmail.com>
References: <CA+NR86hYO3V9UZRveRokAsokDzouxyKyKPXme73qcgwzHBXn6w@mail.gmail.com>
Message-ID: <4D221A1A-A9C4-48D6-B246-AEA74B070469@oracle.com>

Thanks for taking the time Ethan. Our team will reach out directly once we?ve had a time to review your suggestions.

Chad


?
Chad Arimura
Java Developer Relations
Oracle Corporation
+1-415-935-3448 [m]

Dev.java - Inside.java - Twitter.com/java - Youtube.com/java







> On Feb 5, 2022, at 1:48 PM, Ethan McCue <ethan at mccue.dev> wrote:
> 
> Hi all,
> 
> I've gone through a chunk of the dev.java site and marked up feedback in this Figma
> 
> https://www.figma.com/file/pTnVYD5WHWxsIDoBDuUaFt/dev.java-feedback
> 
> I know it's infinitely easier to be a critic than a creator, but I think that there are very real structural problems with the site as it exists right now and I don't yet have a better mechanism to affect change.
> 
> The biggest and most pervasive issue is that there does not seem to be a clearly defined audience.
> 
> Tutorials will shift rapidly between being targeted at
> * Total beginners
> * Beginners to Java who might know another language
> * Intermediates looking for reference material
> * Experts looking to catch up on new features
> 
> and the quality of content suffers massively as a result, ending up not really being useful for any group.
> 
> I am also cc-ing the discuss mailing list since I think this sort of thing is relevant to the community as a whole.


From noloader at gmail.com  Thu Feb 17 04:47:39 2022
From: noloader at gmail.com (Jeffrey Walton)
Date: Wed, 16 Feb 2022 23:47:39 -0500
Subject: Javac does not produce an output file to run?
Message-ID: <CAH8yC8kbvkeyO=FCQbZqWgfdc+bD4knu_NdYOt+1G=YeHofGcA@mail.gmail.com>

Hi Everyne,

I'm having problems creating a test file with a main() method.
Everything seems to build but javac does not produce an output file
(and it does not error). It looks like the same mystery at
https://stackoverflow.com/questions/8295538/javac-not-producing-output.

I have not used Java in about 30 years. I am current on my C, C++ and ObjC.

How do I fix this?

Thanks in advance.

==========
Here's the one hint I have. Javac is building TestClient.class, but
not TestClient to run:

$ find . -iname 'TestClient*'
./com/example/technology/framework/security/encryption/TestClient.class
./TestClient.java

Here's what I want to do:

$ ./TestClient

==========
Here's the tail of the build output, when TestClient is supposed to be built.

$ make
...
jar cf example-encryption.jar
com/example/technology/framework/security/encryption/Encry
ptionConstants.class
com/example/technology/framework/security/encryption/EncryptionExce
ption.class com/example/technology/framework/security/encryption/EncryptionUtility.class
com/example/technology/framework/security/encryption/EncryptionManager.class

javac -cp example-encryption.jar -verbose -g -sourcepath ./ -d ./
TestClient.java
[parsing started
SimpleFileObject[/home/jwalton/Desktop/encryption/TestClient.java]]
[parsing completed 11ms]
[loading /modules/jdk.unsupported/module-info.class]
[loading /modules/jdk.attach/module-info.class]
[loading /modules/jdk.hotspot.agent/module-info.class]
[loading /modules/jdk.naming.ldap/module-info.class]
[loading /modules/jdk.jconsole/module-info.class]
[loading /modules/jdk.zipfs/module-info.class]
[loading /modules/jdk.jlink/module-info.class]
[loading /modules/jdk.naming.rmi/module-info.class]
[loading /modules/java.naming/module-info.class]
[loading /modules/jdk.unsupported.desktop/module-info.class]
[loading /modules/jdk.rmic/module-info.class]
[loading /modules/jdk.jdi/module-info.class]
[loading /modules/jdk.charsets/module-info.class]
[loading /modules/java.logging/module-info.class]
[loading /modules/jdk.security.jgss/module-info.class]
[loading /modules/jdk.jfr/module-info.class]
[loading /modules/jdk.management.agent/module-info.class]
[loading /modules/java.datatransfer/module-info.class]
[loading /modules/jdk.internal.opt/module-info.class]
[loading /modules/jdk.pack/module-info.class]
[loading /modules/java.scripting/module-info.class]
[loading /modules/jdk.jshell/module-info.class]
[loading /modules/jdk.jstatd/module-info.class]
[loading /modules/java.smartcardio/module-info.class]
[loading /modules/jdk.net/module-info.class]
[loading /modules/java.security.sasl/module-info.class]
[loading /modules/jdk.accessibility/module-info.class]
[loading /modules/java.security.jgss/module-info.class]
[loading /modules/jdk.internal.le/module-info.class]
[loading /modules/jdk.internal.jvmstat/module-info.class]
[loading /modules/jdk.editpad/module-info.class]
[loading /modules/jdk.javadoc/module-info.class]
[loading /modules/jdk.management.jfr/module-info.class]
[loading /modules/java.se/module-info.class]
[loading /modules/jdk.jartool/module-info.class]
[loading /modules/jdk.jsobject/module-info.class]
[loading /modules/jdk.naming.dns/module-info.class]
[loading /modules/java.transaction.xa/module-info.class]
[loading /modules/java.sql.rowset/module-info.class]
[loading /modules/java.instrument/module-info.class]
[loading /modules/jdk.sctp/module-info.class]
[loading /modules/jdk.internal.vm.compiler/module-info.class]
[loading /modules/jdk.jdwp.agent/module-info.class]
[loading /modules/jdk.scripting.nashorn/module-info.class]
[loading /modules/java.desktop/module-info.class]
[loading /modules/jdk.internal.vm.ci/module-info.class]
[loading /modules/jdk.compiler/module-info.class]
[loading /modules/java.base/module-info.class]
[loading /modules/jdk.httpserver/module-info.class]
[loading /modules/java.sql/module-info.class]
[loading /modules/jdk.aot/module-info.class]
[loading /modules/java.management.rmi/module-info.class]
[loading /modules/jdk.internal.ed/module-info.class]
[loading /modules/java.prefs/module-info.class]
[loading /modules/jdk.localedata/module-info.class]
[loading /modules/jdk.jdeps/module-info.class]
[loading /modules/jdk.xml.dom/module-info.class]
[loading /modules/jdk.dynalink/module-info.class]
[loading /modules/jdk.management/module-info.class]
[loading /modules/jdk.crypto.cryptoki/module-info.class]
[loading /modules/jdk.crypto.ec/module-info.class]
[loading /modules/java.xml/module-info.class]
[loading /modules/java.rmi/module-info.class]
[loading /modules/java.compiler/module-info.class]
[loading /modules/jdk.security.auth/module-info.class]
[loading /modules/java.net.http/module-info.class]
[loading /modules/java.management/module-info.class]
[loading /modules/java.xml.crypto/module-info.class]
[loading /modules/jdk.scripting.nashorn.shell/module-info.class]
[loading /modules/jdk.jcmd/module-info.class]
[loading /modules/jdk.internal.vm.compiler.management/module-info.class]
[search path for source files: .]
[search path for class files:
/usr/lib/jvm/java-11-openjdk-amd64/lib/modules,cna-encrypt
ion.jar]
[loading /modules/java.base/java/lang/Object.class]
[loading /modules/java.base/java/lang/String.class]
[loading /modules/java.base/java/lang/Deprecated.class]
[loading /modules/java.base/java/lang/annotation/Retention.class]
[loading /modules/java.base/java/lang/annotation/RetentionPolicy.class]
[loading /modules/java.base/java/lang/annotation/Target.class]
[loading /modules/java.base/java/lang/annotation/ElementType.class]
[checking com.cna.technology.framework.security.encryption.TestClient]
[loading /modules/java.base/java/io/Serializable.class]
[loading /modules/java.base/java/lang/AutoCloseable.class]
[loading /modules/java.base/java/lang/Byte.class]
[loading /modules/java.base/java/lang/Character.class]
[loading /modules/java.base/java/lang/Short.class]
[loading /modules/java.base/java/lang/Long.class]
[loading /modules/java.base/java/lang/Float.class]
[loading /modules/java.base/java/lang/Integer.class]
[loading /modules/java.base/java/lang/Double.class]
[loading /modules/java.base/java/lang/Boolean.class]
[loading /modules/java.base/java/lang/Void.class]
[loading /modules/java.base/java/lang/System.class]
[loading /modules/java.base/java/io/PrintStream.class]
[loading /modules/java.base/java/lang/Appendable.class]
[loading /modules/java.base/java/io/Closeable.class]
[loading /modules/java.base/java/io/FilterOutputStream.class]
[loading /modules/java.base/java/io/OutputStream.class]
[loading /modules/java.base/java/io/Flushable.class]
[loading /modules/java.base/java/lang/Comparable.class]
[loading /modules/java.base/java/lang/CharSequence.class]
[loading /home/jwalton/Desktop/encryption/cna-encryption.jar(/com/cna/technology/framewo
rk/security/encryption/EncryptionManager.class)]
[loading /home/jwalton/Desktop/encryption/cna-encryption.jar(/com/cna/technology/framewo
rk/security/encryption/EncryptionException.class)]
[loading /modules/java.base/java/lang/Exception.class]
[loading /modules/java.base/java/lang/Throwable.class]
[loading /modules/java.base/java/lang/Error.class]
[loading /modules/java.base/java/lang/RuntimeException.class]
[loading /modules/java.base/java/lang/invoke/StringConcatFactory.class]
[loading /modules/java.base/java/lang/invoke/MethodHandles.class]
[loading /modules/java.base/java/lang/invoke/MethodHandles$Lookup.class]
[loading /modules/java.base/java/lang/invoke/MethodType.class]
[loading /modules/java.base/java/lang/invoke/CallSite.class]
[wrote ./com/cna/technology/framework/security/encryption/TestClient.class]
[total 206ms]

==========
Here's the makefile. It produces the jar file with the expected
directory structure.

$ cat makefile

# EncryptionConstants.java  EncryptionManager.java  TestClient.java
# EncryptionException.java  EncryptionUtility.java

PROJ_BASE = com/example/technology/framework/security/encryption

JC = javac
JFLAGS = -verbose -g -sourcepath ./ -d ./

JAR = jar
JAROPTS = cf

# Cannot do this. Javac is too stupid to find what it needs
# JAR_SRCS = $(filter-out TestClient.java,$(sort $(wildcard *java)))
JAR_SRCS = EncryptionConstants.java EncryptionException.java
EncryptionUtility.java Encr
yptionManager.java
JAR_OBJS := $(patsubst %,$(PROJ_BASE)/%,$(JAR_SRCS:.java=.class))

all: TestClient

TestClient: example-encryption.jar
       $(JC) -cp example-encryption.jar $(JFLAGS) TestClient.java

example-encryption.jar: $(JAR_OBJS)
       $(JAR) $(strip $(JAROPTS) $@ $(JAR_OBJS))

$(PROJ_BASE)/%.class : %.java
       $(JC) $(strip $(JFLAGS)) $<

clean:
       rm -f *.class rm -f ./*~ && rm -f example-encryption.jar && rm
-rf ./build ./com

zip:
       zip -u -9 encryption.zip *.java

From david.holmes at oracle.com  Thu Feb 17 05:28:24 2022
From: david.holmes at oracle.com (David Holmes)
Date: Thu, 17 Feb 2022 15:28:24 +1000
Subject: Javac does not produce an output file to run?
In-Reply-To: <CAH8yC8kbvkeyO=FCQbZqWgfdc+bD4knu_NdYOt+1G=YeHofGcA@mail.gmail.com>
References: <CAH8yC8kbvkeyO=FCQbZqWgfdc+bD4knu_NdYOt+1G=YeHofGcA@mail.gmail.com>
Message-ID: <23a2d818-3f5f-050f-5734-5916837365f5@oracle.com>

Hi Jeffrey,

This is a mailing list for discussing the OpenJDK not for general help 
on how to write Java programs. There are many resources for beginner 
Java programmers e.g.

https://docs.oracle.com/javase/tutorial/getStarted/index.html

That said note that javac compiles Java source code (.java files) into 
Java bytecode (.class files). You then use the java launcher to execute 
(via interpretation and JIT compilation) those .class files.

Regards,
David

On 17/02/2022 2:47 pm, Jeffrey Walton wrote:
> Hi Everyne,
> 
> I'm having problems creating a test file with a main() method.
> Everything seems to build but javac does not produce an output file
> (and it does not error). It looks like the same mystery at
> https://stackoverflow.com/questions/8295538/javac-not-producing-output.
> 
> I have not used Java in about 30 years. I am current on my C, C++ and ObjC.
> 
> How do I fix this?
> 
> Thanks in advance.
> 
> ==========
> Here's the one hint I have. Javac is building TestClient.class, but
> not TestClient to run:
> 
> $ find . -iname 'TestClient*'
> ./com/example/technology/framework/security/encryption/TestClient.class
> ./TestClient.java
> 
> Here's what I want to do:
> 
> $ ./TestClient
> 
> ==========
> Here's the tail of the build output, when TestClient is supposed to be built.
> 
> $ make
> ...
> jar cf example-encryption.jar
> com/example/technology/framework/security/encryption/Encry
> ptionConstants.class
> com/example/technology/framework/security/encryption/EncryptionExce
> ption.class com/example/technology/framework/security/encryption/EncryptionUtility.class
> com/example/technology/framework/security/encryption/EncryptionManager.class
> 
> javac -cp example-encryption.jar -verbose -g -sourcepath ./ -d ./
> TestClient.java
> [parsing started
> SimpleFileObject[/home/jwalton/Desktop/encryption/TestClient.java]]
> [parsing completed 11ms]
> [loading /modules/jdk.unsupported/module-info.class]
> [loading /modules/jdk.attach/module-info.class]
> [loading /modules/jdk.hotspot.agent/module-info.class]
> [loading /modules/jdk.naming.ldap/module-info.class]
> [loading /modules/jdk.jconsole/module-info.class]
> [loading /modules/jdk.zipfs/module-info.class]
> [loading /modules/jdk.jlink/module-info.class]
> [loading /modules/jdk.naming.rmi/module-info.class]
> [loading /modules/java.naming/module-info.class]
> [loading /modules/jdk.unsupported.desktop/module-info.class]
> [loading /modules/jdk.rmic/module-info.class]
> [loading /modules/jdk.jdi/module-info.class]
> [loading /modules/jdk.charsets/module-info.class]
> [loading /modules/java.logging/module-info.class]
> [loading /modules/jdk.security.jgss/module-info.class]
> [loading /modules/jdk.jfr/module-info.class]
> [loading /modules/jdk.management.agent/module-info.class]
> [loading /modules/java.datatransfer/module-info.class]
> [loading /modules/jdk.internal.opt/module-info.class]
> [loading /modules/jdk.pack/module-info.class]
> [loading /modules/java.scripting/module-info.class]
> [loading /modules/jdk.jshell/module-info.class]
> [loading /modules/jdk.jstatd/module-info.class]
> [loading /modules/java.smartcardio/module-info.class]
> [loading /modules/jdk.net/module-info.class]
> [loading /modules/java.security.sasl/module-info.class]
> [loading /modules/jdk.accessibility/module-info.class]
> [loading /modules/java.security.jgss/module-info.class]
> [loading /modules/jdk.internal.le/module-info.class]
> [loading /modules/jdk.internal.jvmstat/module-info.class]
> [loading /modules/jdk.editpad/module-info.class]
> [loading /modules/jdk.javadoc/module-info.class]
> [loading /modules/jdk.management.jfr/module-info.class]
> [loading /modules/java.se/module-info.class]
> [loading /modules/jdk.jartool/module-info.class]
> [loading /modules/jdk.jsobject/module-info.class]
> [loading /modules/jdk.naming.dns/module-info.class]
> [loading /modules/java.transaction.xa/module-info.class]
> [loading /modules/java.sql.rowset/module-info.class]
> [loading /modules/java.instrument/module-info.class]
> [loading /modules/jdk.sctp/module-info.class]
> [loading /modules/jdk.internal.vm.compiler/module-info.class]
> [loading /modules/jdk.jdwp.agent/module-info.class]
> [loading /modules/jdk.scripting.nashorn/module-info.class]
> [loading /modules/java.desktop/module-info.class]
> [loading /modules/jdk.internal.vm.ci/module-info.class]
> [loading /modules/jdk.compiler/module-info.class]
> [loading /modules/java.base/module-info.class]
> [loading /modules/jdk.httpserver/module-info.class]
> [loading /modules/java.sql/module-info.class]
> [loading /modules/jdk.aot/module-info.class]
> [loading /modules/java.management.rmi/module-info.class]
> [loading /modules/jdk.internal.ed/module-info.class]
> [loading /modules/java.prefs/module-info.class]
> [loading /modules/jdk.localedata/module-info.class]
> [loading /modules/jdk.jdeps/module-info.class]
> [loading /modules/jdk.xml.dom/module-info.class]
> [loading /modules/jdk.dynalink/module-info.class]
> [loading /modules/jdk.management/module-info.class]
> [loading /modules/jdk.crypto.cryptoki/module-info.class]
> [loading /modules/jdk.crypto.ec/module-info.class]
> [loading /modules/java.xml/module-info.class]
> [loading /modules/java.rmi/module-info.class]
> [loading /modules/java.compiler/module-info.class]
> [loading /modules/jdk.security.auth/module-info.class]
> [loading /modules/java.net.http/module-info.class]
> [loading /modules/java.management/module-info.class]
> [loading /modules/java.xml.crypto/module-info.class]
> [loading /modules/jdk.scripting.nashorn.shell/module-info.class]
> [loading /modules/jdk.jcmd/module-info.class]
> [loading /modules/jdk.internal.vm.compiler.management/module-info.class]
> [search path for source files: .]
> [search path for class files:
> /usr/lib/jvm/java-11-openjdk-amd64/lib/modules,cna-encrypt
> ion.jar]
> [loading /modules/java.base/java/lang/Object.class]
> [loading /modules/java.base/java/lang/String.class]
> [loading /modules/java.base/java/lang/Deprecated.class]
> [loading /modules/java.base/java/lang/annotation/Retention.class]
> [loading /modules/java.base/java/lang/annotation/RetentionPolicy.class]
> [loading /modules/java.base/java/lang/annotation/Target.class]
> [loading /modules/java.base/java/lang/annotation/ElementType.class]
> [checking com.cna.technology.framework.security.encryption.TestClient]
> [loading /modules/java.base/java/io/Serializable.class]
> [loading /modules/java.base/java/lang/AutoCloseable.class]
> [loading /modules/java.base/java/lang/Byte.class]
> [loading /modules/java.base/java/lang/Character.class]
> [loading /modules/java.base/java/lang/Short.class]
> [loading /modules/java.base/java/lang/Long.class]
> [loading /modules/java.base/java/lang/Float.class]
> [loading /modules/java.base/java/lang/Integer.class]
> [loading /modules/java.base/java/lang/Double.class]
> [loading /modules/java.base/java/lang/Boolean.class]
> [loading /modules/java.base/java/lang/Void.class]
> [loading /modules/java.base/java/lang/System.class]
> [loading /modules/java.base/java/io/PrintStream.class]
> [loading /modules/java.base/java/lang/Appendable.class]
> [loading /modules/java.base/java/io/Closeable.class]
> [loading /modules/java.base/java/io/FilterOutputStream.class]
> [loading /modules/java.base/java/io/OutputStream.class]
> [loading /modules/java.base/java/io/Flushable.class]
> [loading /modules/java.base/java/lang/Comparable.class]
> [loading /modules/java.base/java/lang/CharSequence.class]
> [loading /home/jwalton/Desktop/encryption/cna-encryption.jar(/com/cna/technology/framewo
> rk/security/encryption/EncryptionManager.class)]
> [loading /home/jwalton/Desktop/encryption/cna-encryption.jar(/com/cna/technology/framewo
> rk/security/encryption/EncryptionException.class)]
> [loading /modules/java.base/java/lang/Exception.class]
> [loading /modules/java.base/java/lang/Throwable.class]
> [loading /modules/java.base/java/lang/Error.class]
> [loading /modules/java.base/java/lang/RuntimeException.class]
> [loading /modules/java.base/java/lang/invoke/StringConcatFactory.class]
> [loading /modules/java.base/java/lang/invoke/MethodHandles.class]
> [loading /modules/java.base/java/lang/invoke/MethodHandles$Lookup.class]
> [loading /modules/java.base/java/lang/invoke/MethodType.class]
> [loading /modules/java.base/java/lang/invoke/CallSite.class]
> [wrote ./com/cna/technology/framework/security/encryption/TestClient.class]
> [total 206ms]
> 
> ==========
> Here's the makefile. It produces the jar file with the expected
> directory structure.
> 
> $ cat makefile
> 
> # EncryptionConstants.java  EncryptionManager.java  TestClient.java
> # EncryptionException.java  EncryptionUtility.java
> 
> PROJ_BASE = com/example/technology/framework/security/encryption
> 
> JC = javac
> JFLAGS = -verbose -g -sourcepath ./ -d ./
> 
> JAR = jar
> JAROPTS = cf
> 
> # Cannot do this. Javac is too stupid to find what it needs
> # JAR_SRCS = $(filter-out TestClient.java,$(sort $(wildcard *java)))
> JAR_SRCS = EncryptionConstants.java EncryptionException.java
> EncryptionUtility.java Encr
> yptionManager.java
> JAR_OBJS := $(patsubst %,$(PROJ_BASE)/%,$(JAR_SRCS:.java=.class))
> 
> all: TestClient
> 
> TestClient: example-encryption.jar
>         $(JC) -cp example-encryption.jar $(JFLAGS) TestClient.java
> 
> example-encryption.jar: $(JAR_OBJS)
>         $(JAR) $(strip $(JAROPTS) $@ $(JAR_OBJS))
> 
> $(PROJ_BASE)/%.class : %.java
>         $(JC) $(strip $(JFLAGS)) $<
> 
> clean:
>         rm -f *.class rm -f ./*~ && rm -f example-encryption.jar && rm
> -rf ./build ./com
> 
> zip:
>         zip -u -9 encryption.zip *.java

From noloader at gmail.com  Thu Feb 17 05:48:13 2022
From: noloader at gmail.com (Jeffrey Walton)
Date: Thu, 17 Feb 2022 00:48:13 -0500
Subject: Javac does not produce an output file to run?
In-Reply-To: <23a2d818-3f5f-050f-5734-5916837365f5@oracle.com>
References: <CAH8yC8kbvkeyO=FCQbZqWgfdc+bD4knu_NdYOt+1G=YeHofGcA@mail.gmail.com>
 <23a2d818-3f5f-050f-5734-5916837365f5@oracle.com>
Message-ID: <CAH8yC8=DPf=jPN-n74Y4vvqK+4Cvckns+GTco581SFWOsLWaqw@mail.gmail.com>

On Thu, Feb 17, 2022 at 12:28 AM David Holmes <david.holmes at oracle.com> wrote:
>
> Hi Jeffrey,
>
> This is a mailing list for discussing the OpenJDK not for general help
> on how to write Java programs. There are many resources for beginner
> Java programmers e.g.

Thanks David.

Maybe I am misunderstanding "discuss -- General discussion about the
OpenJDK Community, unmoderated and possibly high-traffic",
https://mail.openjdk.java.net/mailman/listinfo/discuss? Are OpenJDK
users not part of the community?

> https://docs.oracle.com/javase/tutorial/getStarted/index.html
>
> That said note that javac compiles Java source code (.java files) into
> Java bytecode (.class files). You then use the java launcher to execute
> (via interpretation and JIT compilation) those .class files.

Thanks.

From david.holmes at oracle.com  Thu Feb 17 07:42:42 2022
From: david.holmes at oracle.com (David Holmes)
Date: Thu, 17 Feb 2022 17:42:42 +1000
Subject: Javac does not produce an output file to run?
In-Reply-To: <CAH8yC8=DPf=jPN-n74Y4vvqK+4Cvckns+GTco581SFWOsLWaqw@mail.gmail.com>
References: <CAH8yC8kbvkeyO=FCQbZqWgfdc+bD4knu_NdYOt+1G=YeHofGcA@mail.gmail.com>
 <23a2d818-3f5f-050f-5734-5916837365f5@oracle.com>
 <CAH8yC8=DPf=jPN-n74Y4vvqK+4Cvckns+GTco581SFWOsLWaqw@mail.gmail.com>
Message-ID: <34e2c0ee-da9f-ab2d-fd2b-1e9c0628fafa@oracle.com>

On 17/02/2022 3:48 pm, Jeffrey Walton wrote:
> On Thu, Feb 17, 2022 at 12:28 AM David Holmes <david.holmes at oracle.com> wrote:
>>
>> Hi Jeffrey,
>>
>> This is a mailing list for discussing the OpenJDK not for general help
>> on how to write Java programs. There are many resources for beginner
>> Java programmers e.g.
> 
> Thanks David.
> 
> Maybe I am misunderstanding "discuss -- General discussion about the
> OpenJDK Community, unmoderated and possibly high-traffic",
> https://mail.openjdk.java.net/mailman/listinfo/discuss? Are OpenJDK
> users not part of the community?

It is for discussion _about_ the "OpenJDK community", not general 
discussion by members of that community.

Cheers,
David

>> https://docs.oracle.com/javase/tutorial/getStarted/index.html
>>
>> That said note that javac compiles Java source code (.java files) into
>> Java bytecode (.class files). You then use the java launcher to execute
>> (via interpretation and JIT compilation) those .class files.
> 
> Thanks.

From ethan at mccue.dev  Fri Feb 18 02:43:28 2022
From: ethan at mccue.dev (Ethan McCue)
Date: Thu, 17 Feb 2022 21:43:28 -0500
Subject: dev.java feedback
In-Reply-To: <4D221A1A-A9C4-48D6-B246-AEA74B070469@oracle.com>
References: <CA+NR86hYO3V9UZRveRokAsokDzouxyKyKPXme73qcgwzHBXn6w@mail.gmail.com>
 <4D221A1A-A9C4-48D6-B246-AEA74B070469@oracle.com>
Message-ID: <CA+NR86gsTBEzY5f7uuP5172a-mC9o5MFmCGQJ7Oi7cLybWx6cA@mail.gmail.com>

Just following up on this.

On Mon, Feb 7, 2022 at 1:57 PM Chad Arimura <chad.arimura at oracle.com> wrote:

> Thanks for taking the time Ethan. Our team will reach out directly once
> we?ve had a time to review your suggestions.
>
> Chad
>
>
> ?
> Chad Arimura
> Java Developer Relations
> Oracle Corporation
> +1-415-935-3448 [m]
>
> Dev.java - Inside.java - Twitter.com/java - Youtube.com/java
>
>
>
>
>
>
>
> > On Feb 5, 2022, at 1:48 PM, Ethan McCue <ethan at mccue.dev> wrote:
> >
> > Hi all,
> >
> > I've gone through a chunk of the dev.java site and marked up feedback in
> this Figma
> >
> > https://www.figma.com/file/pTnVYD5WHWxsIDoBDuUaFt/dev.java-feedback
> >
> > I know it's infinitely easier to be a critic than a creator, but I think
> that there are very real structural problems with the site as it exists
> right now and I don't yet have a better mechanism to affect change.
> >
> > The biggest and most pervasive issue is that there does not seem to be a
> clearly defined audience.
> >
> > Tutorials will shift rapidly between being targeted at
> > * Total beginners
> > * Beginners to Java who might know another language
> > * Intermediates looking for reference material
> > * Experts looking to catch up on new features
> >
> > and the quality of content suffers massively as a result, ending up not
> really being useful for any group.
> >
> > I am also cc-ing the discuss mailing list since I think this sort of
> thing is relevant to the community as a whole.
>
>

From scott at adligo.com  Tue Feb 22 01:40:39 2022
From: scott at adligo.com (Scott Morgan)
Date: Mon, 21 Feb 2022 19:40:39 -0600
Subject: Custom Primitives?
Message-ID: <CANEdHmg4_R+kT0G0-DKTMjx+sJSgzXrzu9YPifNkCUnyLK=-XQ@mail.gmail.com>

Hi All,

   I've been messing around with some data structures / arrays lately and I
am wondering if Java will ever have custom primitives, and if those
custom primitives could contain optional pointers in some way.  I have
found a number of similar things Value Classes,
https://openjdk.java.net/jeps/401
Primitive Value Classes, etc, but I'm really looking for something a little
lower level.

Ideally I would like to store an array (with a single pointer pointing at
it) of one boolean and one optional pointer / reference, in a primitive
array structure to reduce the space of the null pointers.
   However this creates some obvious problems as length of the boolean only
could be one bit and the boolean + the pointer / reference could be 8 bytes
and one bit (on 64 bit JVMs).  Without the fixed length size of the
primitive, I imagine that the mapping to bytes and array indexes would be
quite challenging & slow.  However I have a gut feeling that something like
this path must be possible.

Are there any plans to solve problems like these in the current JEPs?
Is anyone doing similar research?

Cheers,
-- 
Regards,
Scott Morgan
President & CEO
Adligo Inc
http://www.adligo.com
https://www.linkedin.com/in/scott-morgan-21739415
A+ Better Business Bureau Rating
<https://www.bbb.org/chicago/business-reviews/computer-software-publishers-and-developers/adligo-inc-in-chicago-il-88381256>
https://github.com/adligo

By Appointment Only:
1-866-968-1893 Ex 101
scott at adligo.com
skype:adligo1?call
Send Me Files Securely:
*https://www.sendthisfile.com/f.jsp?id=ewOnyeFQM18IDRf7MMIdolfI
<https://www.sendthisfile.com/f.jsp?id=ewOnyeFQM18IDRf7MMIdolfI>*
https://discord.com/
Adligo#3066

From david.holmes at oracle.com  Tue Feb 22 01:43:08 2022
From: david.holmes at oracle.com (David Holmes)
Date: Tue, 22 Feb 2022 11:43:08 +1000
Subject: Custom Primitives?
In-Reply-To: <CANEdHmg4_R+kT0G0-DKTMjx+sJSgzXrzu9YPifNkCUnyLK=-XQ@mail.gmail.com>
References: <CANEdHmg4_R+kT0G0-DKTMjx+sJSgzXrzu9YPifNkCUnyLK=-XQ@mail.gmail.com>
Message-ID: <fceb306c-70d6-18aa-a67e-7aa3162761b8@oracle.com>

Hi Scott,

Please take this to valhalla-dev at openjdk.java.net to discuss.

Thanks,
David

On 22/02/2022 11:40 am, Scott Morgan wrote:
> Hi All,
> 
>     I've been messing around with some data structures / arrays lately and I
> am wondering if Java will ever have custom primitives, and if those
> custom primitives could contain optional pointers in some way.  I have
> found a number of similar things Value Classes,
> https://openjdk.java.net/jeps/401
> Primitive Value Classes, etc, but I'm really looking for something a little
> lower level.
> 
> Ideally I would like to store an array (with a single pointer pointing at
> it) of one boolean and one optional pointer / reference, in a primitive
> array structure to reduce the space of the null pointers.
>     However this creates some obvious problems as length of the boolean only
> could be one bit and the boolean + the pointer / reference could be 8 bytes
> and one bit (on 64 bit JVMs).  Without the fixed length size of the
> primitive, I imagine that the mapping to bytes and array indexes would be
> quite challenging & slow.  However I have a gut feeling that something like
> this path must be possible.
> 
> Are there any plans to solve problems like these in the current JEPs?
> Is anyone doing similar research?
> 
> Cheers,

From some-java-user-99206970363698485155 at vodafonemail.de  Sat Feb 26 00:40:23 2022
From: some-java-user-99206970363698485155 at vodafonemail.de (some-java-user-99206970363698485155 at vodafonemail.de)
Date: Sat, 26 Feb 2022 01:40:23 +0100
Subject: Relax Terms of Use / Drop Terms of Use requirement for GitHub comments
Message-ID: <82bee4fc769340208e7a0119cda4fec8@vodafonemail.de>

Hello,
could you please consider relaxing the Terms of Use, or at least reconsider whether interaction on GitHub (e.g. pull request
comments) really has to require Terms of Use agreement?

The current Terms of Use (https://openjdk.java.net/legal/tou/terms) points 4.d, e, k all mention that by contributing you grant
Oracle a "royalty-free, perpetual, irrevocable, worldwide, non-exclusive and fully sub-licensable right and license" to the 
submissions. While I acknowledge the great and important role Oracle plays in the development of the OpenJDK, I don't really
see why this has to imply giving Oracle the right to do close to 'anything' with the submissions, when one only wants to 
contribute to the OpenJDK (and I am a bit surprised that none of the other companies contributing to the OpenJDK have an issue 
with this).

Related to this is also the enforcement of agreeing to the Terms of Use to be able to interact on GitHub with the OpenJDK 
development. I don't know of any other project / company doing development on GitHub which is that restrictive. Sure, some
others require you to sign a Contributor License Agreement, but interacting (such as writing a pull request comment) does not
require this. By enforcing the ToU, you risk to lose potential contributors, because really, who is keen to keep contributing
after beeing greeted with a large ToU when merely adding a GitHub comment? (at least there is a "Plain-English summary" version
though).

The current implementation of this enforcement can also be rather disruptive (for both the comment author and the other users
involved in the pull request), as seen in
- https://github.com/openjdk/jdk/pull/3402#issuecomment-934771740
- https://github.com/openjdk/jdk/pull/5762#issuecomment-934130809
- https://github.com/openjdk/jdk/pull/5933#discussion_r734980808
- https://github.com/openjdk/jdk/pull/6512#discussion_r755630515
- https://github.com/openjdk/jdk/pull/4103#discussion_r637965569

And it has its flaws, see SKARA-1210 and SKARA-1211.
(For what it's worth there is also a small mistake in the comment message; in 'Please Use "Add GitHub user <USER> for the 
summary.' after <USER> the closing double quote '"' is missing; and maybe "Use" should not be capitalized)

Kind regards


From tanksherman27 at gmail.com  Sun Feb 27 07:38:41 2022
From: tanksherman27 at gmail.com (Jules W.)
Date: Sun, 27 Feb 2022 15:38:41 +0800
Subject: On applying for Author at the JDK Project
Message-ID: <CAP2b4GPsT6Cpq92+=JFHoGHiLOT0jdV5p2eBLkWS_LAVQVQqDw@mail.gmail.com>

Hi all,

Currently I'm thinking of applying for the Author position at the JDK
project, but the OpenJDK Project page (https://openjdk.java.net/projects/) is
somewhat vague about how to do so, simply saying to contact the project
lead after 2 pull requests have been merged without offering a proper
communication channel to do so. Additionally some of the information on the
site also seems to be outdated, and I'm unsure of whether this outdated
information also includes the section describing the Author application
process. Currently the census lists Mr. Reinhold as the project lead for
the JDK, is there an unmentioned formal communication channel I can use to
apply for Author or should I contact Mr. Reinhold directly as per the
page's instructions? (And if I should do the latter, do I contact him
directly through his Oracle email address?)

Thanks for your patience.

best regards,
Julian

From volker.simonis at gmail.com  Sun Feb 27 10:43:20 2022
From: volker.simonis at gmail.com (Volker Simonis)
Date: Sun, 27 Feb 2022 11:43:20 +0100
Subject: On applying for Author at the JDK Project
In-Reply-To: <CAP2b4GPsT6Cpq92+=JFHoGHiLOT0jdV5p2eBLkWS_LAVQVQqDw@mail.gmail.com>
References: <CAP2b4GPsT6Cpq92+=JFHoGHiLOT0jdV5p2eBLkWS_LAVQVQqDw@mail.gmail.com>
Message-ID: <CA+3eh11AE7EeL-Jy7QubhvoD3ZHDKKPLiquRPKdm99trzYCnyA@mail.gmail.com>

Hi Julian,

Yes, just contact Mark Reinhold by email with links to your two
contributions.

Best regards,
Volker

PS: plan to wait up to two weeks until your request gets processed.

Jules W. <tanksherman27 at gmail.com> schrieb am So., 27. Feb. 2022, 08:39:

> Hi all,
>
> Currently I'm thinking of applying for the Author position at the JDK
> project, but the OpenJDK Project page (https://openjdk.java.net/projects/)
> is
> somewhat vague about how to do so, simply saying to contact the project
> lead after 2 pull requests have been merged without offering a proper
> communication channel to do so. Additionally some of the information on the
> site also seems to be outdated, and I'm unsure of whether this outdated
> information also includes the section describing the Author application
> process. Currently the census lists Mr. Reinhold as the project lead for
> the JDK, is there an unmentioned formal communication channel I can use to
> apply for Author or should I contact Mr. Reinhold directly as per the
> page's instructions? (And if I should do the latter, do I contact him
> directly through his Oracle email address?)
>
> Thanks for your patience.
>
> best regards,
> Julian
>

From tanksherman27 at gmail.com  Sun Feb 27 12:24:55 2022
From: tanksherman27 at gmail.com (Jules W.)
Date: Sun, 27 Feb 2022 20:24:55 +0800
Subject: On applying for Author at the JDK Project
In-Reply-To: <CA+3eh11AE7EeL-Jy7QubhvoD3ZHDKKPLiquRPKdm99trzYCnyA@mail.gmail.com>
References: <CAP2b4GPsT6Cpq92+=JFHoGHiLOT0jdV5p2eBLkWS_LAVQVQqDw@mail.gmail.com>
 <CA+3eh11AE7EeL-Jy7QubhvoD3ZHDKKPLiquRPKdm99trzYCnyA@mail.gmail.com>
Message-ID: <CAP2b4GMekeH-CG1qjATCVxZbnO2GNp6m68Xn3+59hV7_nX3b_w@mail.gmail.com>

Hi Volker,

Got it, thanks for the reply and have a great day!

regards,
Julian Waters

On Sun, Feb 27, 2022 at 6:43 PM Volker Simonis <volker.simonis at gmail.com>
wrote:

> Hi Julian,
>
> Yes, just contact Mark Reinhold by email with links to your two
> contributions.
>
> Best regards,
> Volker
>
> PS: plan to wait up to two weeks until your request gets processed.
>
> Jules W. <tanksherman27 at gmail.com> schrieb am So., 27. Feb. 2022, 08:39:
>
>> Hi all,
>>
>> Currently I'm thinking of applying for the Author position at the JDK
>> project, but the OpenJDK Project page (https://openjdk.java.net/projects/)
>> is
>> somewhat vague about how to do so, simply saying to contact the project
>> lead after 2 pull requests have been merged without offering a proper
>> communication channel to do so. Additionally some of the information on
>> the
>> site also seems to be outdated, and I'm unsure of whether this outdated
>> information also includes the section describing the Author application
>> process. Currently the census lists Mr. Reinhold as the project lead for
>> the JDK, is there an unmentioned formal communication channel I can use to
>> apply for Author or should I contact Mr. Reinhold directly as per the
>> page's instructions? (And if I should do the latter, do I contact him
>> directly through his Oracle email address?)
>>
>> Thanks for your patience.
>>
>> best regards,
>> Julian
>>
>