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From "Peter Reilly" <peter.kitt.rei...@gmail.com>
Subject Re: a problem compiling a Java 5 project with generics
Date Tue, 17 Oct 2006 09:38:38 GMT
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@gmail.com> 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@gmail.com> wrote:
> > On 17/10/06, Chavdar Botev <cbotev@gmail.com> 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@ant.apache.org
> > > For additional commands, e-mail: user-help@ant.apache.org
> > >
> > >
> > >
> >
> >
> > --
> > Regards, Petar!
> > Karlovo, Bulgaria.
> >
> >
>
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>

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