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Re: Problem compiling with 9 for 8

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From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: Problem compiling with 9 for 8
Date	Mon, 2 Oct 2017 16:10:15 -0400
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On 10/2/2017 3:49 PM, Knute Johnson wrote:
> On 10/2/2017 13:25, Arne Vajhøj wrote:
>> On 10/2/2017 11:51 AM, Knute Johnson wrote:
>>> I want to compile this program with the Java 9 compiler but with but 
>>> with the --release 8 option so that it will run on a Java 8 runtime. 
>>> The --add-modules option is not available if the --release options is 
>>> specified.  Anybody know what the solution is?  Am I going at this 
>>> the wrong way?
>>>
>>> C:\Users\Knute Johnson>javac --release 8 -Xlint:unchecked -cp 
>>> .;com/knutejohnson
>>> /rosen/javax.mail.jar com/knutejohnson/rosen/PHD2Alarms.java
>>> .\com\knutejohnson\rosen\AlarmDialog2.java:9: error: package 
>>> javafx.scene.media
>>> does not exist
>>> import javafx.scene.media.*;
>>> ^
>>> .\com\knutejohnson\rosen\AlarmDialog2.java:60: error: cannot find symbol
>>>          AudioClip clip = null;
>>>          ^
>>>    symbol:   class AudioClip
>>>    location: class AlarmDialog2
>>
>> Have you tried putting Java 8 jfxrt.jar explicit in classpath?
> 
> No but that file is not included in Java 9.  It compiles fine if I don't 
> have the --release 8 option and it compiled fine under Java 8.

Yes. But does it work?

It is my understanding that:

javac --release 8 ...

is really a short version of:

javac -source 1.8 -target 1.8 -Xbootclasspath:pathtojava8jar ...

And if that is correct then it still need the old jar files
to build against.

And maybe it just don't find jfxrt.jar automatically.

Arne

Thread

Problem compiling with 9 for 8 Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-10-02 10:51 -0500
  Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 14:25 -0400
    Re: Problem compiling with 9 for 8 Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-10-02 14:49 -0500
      Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 16:10 -0400
        Re: Problem compiling with 9 for 8 Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-10-02 16:08 -0500
          Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 19:46 -0400
            Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 20:03 -0400
              Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 20:12 -0400
                Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-02 20:24 -0400
                Re: Problem compiling with 9 for 8 Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-10-03 10:32 -0500
                Re: Problem compiling with 9 for 8 Arne Vajhøj <arne@vajhoej.dk> - 2017-10-03 20:48 -0400
                Re: Problem compiling with 9 for 8 Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-10-04 17:27 -0500

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