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AW: a problem compiling a Java 5 project with generics

AW: a problem compiling a Java 5 project with generics

2006-10-17       - By James Abley
Reply:     1     2     3     4     5     6     7     8     9     10     >>  

Fails for me:

Ubuntu Dapper, Ant 1.6.5, Sun JDK 1.5.0_07

<project>
    <javac srcdir="." destdir="."/>
</project>

bash:$ ant -v
bash:$ touch test/Test3.java
bash:$ ant -v

    [javac]     /work/ant-test/ant-generics/test/Test3.java
    [javac] /work/ant-test/ant-generics/test/Test3.java:8: incompatible
types
    [javac] found   : test.Base
    [javac] required: test.Sub
    [javac]         public Sub p() {return this.getV();}

Is this a javac issue rather than ANT issue? I can provide more
information if required.

James

Jan.Materne@(protected) wrote:
> Also no problems .... on WinXP, Ant 1.6.5 and Java 1.5.0_06-b05.
>
>> setant 165
> Apache Ant version 1.6.5 compiled on June 2 2005
>
>> setjava 15
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
> Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
>
>> del test\*.class
>
>> ant -v
> Project base dir set to: C:\tmp\ant-generics
>     [javac] build.xml skipped - don't know how to handle it
>     [javac] test\Base.java added as test/Base.class doesn't exist.
>     [javac] test\Sub.java added as test/Sub.class doesn't exist.
>     [javac] test\Test1.java added as test/Test1.class doesn't exist.
>     [javac] test\Test2.java added as test/Test2.class doesn't exist.
>     [javac] test\Test3.java added as test/Test3.class doesn't exist.
>     [javac] Compiling 5 source files to C:\tmp\ant-generics
>     [javac] Using modern compiler
>     [javac] Compilation arguments:
>     [javac] '-d'
>     [javac] 'C:\tmp\ant-generics'
>     [javac] '-classpath'
>     [javac] ' LOT-OF-LIBS-FROM-ANT '
>     [javac] '-sourcepath'
>     [javac] 'C:\tmp\ant-generics'
>     [javac] '-g:none'
>     [javac]
>     [javac] The ' characters around the executable and arguments are
>     [javac] not part of the command.
>     [javac] Files to be compiled:
>     [javac]     C:\tmp\ant-generics\test\Base.java
>     [javac]     C:\tmp\ant-generics\test\Sub.java
>     [javac]     C:\tmp\ant-generics\test\Test1.java
>     [javac]     C:\tmp\ant-generics\test\Test2.java
>     [javac]     C:\tmp\ant-generics\test\Test3.java
> BUILD SUCCESSFUL
>
>> ant -v
> NOTHING-TO-COMPILE
>
>> touch test\Test3.java   (using Cygwin)
>
>> ant -v
> Project base dir set to: C:\tmp\ant-generics
>     [javac] build.xml skipped - don't know how to handle it
>     [javac] test\Base.class skipped - don't know how to handle it
>     [javac] test\Base.java omitted as test/Base.class is up to date.
>     [javac] test\Sub.class skipped - don't know how to handle it
>     [javac] test\Sub.java omitted as test/Sub.class is up to date.
>     [javac] test\Test1$Inner1.class skipped - don't know how to handle it
>     [javac] test\Test1.class skipped - don't know how to handle it
>     [javac] test\Test1.java omitted as test/Test1.class is up to date.
>     [javac] test\Test2$Inner2.class skipped - don't know how to handle it
>     [javac] test\Test2.class skipped - don't know how to handle it
>     [javac] test\Test2.java omitted as test/Test2.class is up to date.
>     [javac] test\Test3$Inner3.class skipped - don't know how to handle it
>     [javac] test\Test3.class skipped - don't know how to handle it
>     [javac] test\Test3.java added as test/Test3.class is outdated.
>     [javac] Compiling 1 source file to C:\tmp\ant-generics
>     [javac] Using modern compiler
>     [javac] Compilation arguments:
>     [javac] '-d'
>     [javac] 'C:\tmp\ant-generics'
>     [javac] '-classpath'
>     [javac] ' LOT-OF-LIBS-FROM-ANT '
>     [javac] '-sourcepath'
>     [javac] 'C:\tmp\ant-generics'
>     [javac] '-g:none'
>     [javac]
>     [javac] The ' characters around the executable and arguments are
>     [javac] not part of the command.
>     [javac] File to be compiled:
>     [javac]     C:\tmp\ant-generics\test\Test3.java
>
> BUILD SUCCESSFUL
>
>
>
> build.xml:
> <project>
>     <javac srcdir="." destdir="."/>
> </project>
>
>
>
> Jan
>
>
>> -----Urspr?ngliche Nachricht-----
>> Von: Peter Reilly [mailto:peter.kitt.reilly@(protected)]
>> Gesendet: Dienstag, 17. Oktober 2006 16:44
>> An: Ant Users List
>> Betreff: Re: a problem compiling a Java 5 project with generics
>>
>> On 10/17/06, Jan.Materne@(protected)
>> <Jan.Materne@(protected)> wrote:
>>> Works for me with Ant 1.6.5 and 1.7beta2 and the given java
>> sources (with and without the commented line).
>>> <project>
>>>     <delete dir="." includes="**/*.class"/>
>>>     <javac srcdir="." destdir="."/>
>>> </project>
>> This works by itself, but touch Test3.java and run again.
>> Peter
>>>
>>>
>>> Jan
>>>
>>>> -----Urspr?ngliche Nachricht-----
>>>> Von: Peter Reilly [mailto:peter.kitt.reilly@(protected)]
>>>> Gesendet: Dienstag, 17. Oktober 2006 11:39
>>>> An: Ant Users List
>>>> Betreff: Re: a problem compiling a Java 5 project with generics
>>>>
>>>> Can you enter a bugzilla report about this.
>>>> It is very strange.
>>>>
>>>> I tried on the commandline:
>>>>
>>>> javac -target 1.5 -g -source  1.5 -sourcepath src -d build\classes
>>>> src\org\test\Test3.java
>>>>
>>>> which works fine - and looks very like the command used by ant.
>>>>
>>>> Peter
>>>>
>>>>
>>>> On 10/17/06, Chavdar Botev <cbotev@(protected)> wrote:
>>>>> Hi
>>>>>
>>>>> For some reason, the mailing server included only the first
>>>>> attachment. Since this is the fourth or the fifth time I am
>>>> trying to
>>>>> send the java files, I give up. I'll inline them in the message.
>>>>>
>>>>> // src/test/Base.java
>>>>> package test;
>>>>> public class Base {}
>>>>>
>>>>>
>>>>> // src/test/Sub.java
>>>>> package test;
>>>>> public class Sub extends Base {}
>>>>>
>>>>> // src/test/Test1.java
>>>>> package test;
>>>>> public class Test1<T extends Base> {
>>>>>         public class Inner1 {
>>>>>                 protected T v;
>>>>>                 public Inner1(T v) {this.v = v;}
>>>>>                 public T getV() {return this.v;}
>>>>>         }
>>>>>         public Inner1 getInner(T v) {return new Inner1(v);} }
>>>>>
>>>>> // src/test/Test2.java
>>>>> package test;
>>>>> public class Test2<T extends Base> extends Test1<T> {
>>>>>         public class Inner2 extends Inner1 {
>>>>>                 public Inner2(T v) {super(v);}
>>>>>                 //public T getV() {return this.v;}
>>>>>         }
>>>>> }
>>>>>
>>>>> // src/test/Test3.java
>>>>> package test;
>>>>> public class Test3 extends Test2<Sub> {
>>>>>         public class Inner3 extends Inner2 {
>>>>>                 public Inner3(Sub v) {super(v);}
>>>>>                 public Sub p() {return this.getV();}
>>>>>         }
>>>>>
>>>>>         public Inner3 g() {
>>>>>                 return new Inner3(new Sub());
>>>>>         }
>>>>> }
>>>>>
>>>>>
>>>>> HTH,
>>>>> Chavdar
>>>>>
>>>>>
>>>>> On 10/16/06, Petar Tahchiev <paranoiabla@(protected)> wrote:
>>>>>> On 17/10/06, Chavdar Botev <cbotev@(protected)> wrote:
>>>>>>> Hi!
>>>>>>>
>>>>>>> I've come accross the following problem trying to
>> compile Java
>>>>>>> 5 classes with generics using Ant 1.6.5. I've attached
>>>> project with
>>>>>>> sample Java classes and a build.xml file.
>>>>>>>
>>>>>>> NOTE: Please create a src/test subdirectory and save the
>>>> attached
>>>>>>> .java files into it. The mailing list server gave me a hard
>>>>>>> time acepting an email with the archived project files. :(
>>>>>>>
>>>>>>> A clean build of the above project works just fine
>> and compiles
>>>>>>> without a problem. If after that, I touch the Test3.java
>>>> file the
>>>>>>> build fails with the following error:
>>>>>>>
>>>>>> [javac] C:\src\appforge\test\src\test\Test3.java:5:
>> incompatible
>>>>>> types
>>>>>>> [javac] found   : test.Base
>>>>>>> [javac] required: test.Sub
>>>>>>> [javac] public Sub p() {return this.getV();} [javac]
>> ^ [javac]
>>>>>>> 1 error
>>>>>>
>>>>>> I must admit that this behaviour is really strange. I am
>>>> interested
>>>>>> in helping you but the problem is that I didn't receive
>> any .java
>>>>>> files. Please try to prvide them again.
>>>>>>
>>>>>>
>>>>>> Initially, I thought that this was a problem with the Java
>>>> compiler.
>>>>>>> After touching Test3.java, I tried running javac manually:
>>>>>>>
>>>>>>> javac -sourcepath src -d bin -g -source 1.5 -target 1.5
>>>>>>> src\test\*.java
>>>>>>>
>>>>>>> It turned out that with the above command-line the project
>>>>>>> compiled OK. The project also compiles without a problem
>>>> in Eclipse 3.2.1.
>>>>>>> Am I missing anything? It is my understanding that the
>>>> build file
>>>>>>> and the command line should produce the same results.
>>>>>>>
>>>>>>> Upon further experimentation, if I uncomment the method in
>>>>>>> Test2.java fixes the problem. Touching Test3.java does
>>>> not break the build.
>>>>>>> Thanks,
>>>>>>> Chavdar
>>>>>>>
>>>>>>>
>>>>>>>
>>>> ------------------------------------------------------------------
>>>>>>> --- To unsubscribe, e-mail:
>> user-unsubscribe@(protected) For
>>>>>>> additional commands, e-mail: user-help@(protected)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Regards, Petar!
>>>>>> Karlovo, Bulgaria.
>>>>>>
>>>>>>
>>>>>
>> -------------------------------------------------------------------
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>>>>> commands, e-mail: user-help@(protected)
>>>>>
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