How to start compiling a big package directory tree ?

I downloaded a java source of a tool which is spread over multiple (40-50) *
.java files
which are located in different sub directories according to their package na
me.

Unfortunately no further instructions (e.g. Ant script) are available.
However the source should be compileable without errors.

How do I start ?

Which class should I compile first ?

For example I found a "main()" method in java file SomeGUI.java

When I switch now to the base directory of package:

D:\java\base\

and type at the command prompt:

javac org\somepack1\subpack2\SomeGUI.java

then the compiler tell me that he cannot find a file/package "org.somepack.a
ddclass"
But the java file org\soempack\addclass.java EXISTS !

Why does the compiler not find this class/source ?

Can I somehow tell the compiler (from the command line !):

"here is the source directory tree. Search for all you need and compile all
necessary classes in the sequence you need".

Tom

Tom Parson wrote:
> Can I somehow tell the compiler (from the command line !):
>
> "here is the source directory tree. Search for all you need and compile al
l
> necessary classes in the sequence you need".

I don't think javac can recursively compile packages.
But creating a simple Ant build.xml should be that hard:

<?xml version="1.0" encoding="UTF-8"?>
<project basedir="." default="compile" name="standard">
<target name="compile">
<javac destdir="." srcdir="." />
</target>
</project>

If you drop that into D:\java\base\ and type ant it will automatically
compile all sources. You might want to adjust destdir to create the
class files into a different directory.

Thomas

Tom Parson wrote:
> I downloaded a java source of a tool which is spread over multiple (40-50)
 *.java files
> which are located in different sub directories according to their package 
name.
>
> Unfortunately no further instructions (e.g. Ant script) are available.
> However the source should be compileable without errors.
>
> How do I start ?
>
> Which class should I compile first ?
>
> For example I found a "main()" method in java file SomeGUI.java
>
> When I switch now to the base directory of package:
>
> D:\java\base\
>
> and type at the command prompt:
>
> javac org\somepack1\subpack2\SomeGUI.java
>
> then the compiler tell me that he cannot find a file/package "org.somepack
.addclass"
> But the java file org\soempack\addclass.java EXISTS !
>
> Why does the compiler not find this class/source ?
>
> Can I somehow tell the compiler (from the command line !):
>
> "here is the source directory tree. Search for all you need and compile al
l
> necessary classes in the sequence you need".

Well, on *nix,
find . -name "*.java"
will find the files
so
javac `find . -name "*.java"`

will compile all the files simultaneously, or at least
compile them all "in the same context", which I think
will solve some of the dependancy issues.

All this is from guessing - I use Ant!!

BugBear

bugbear wrote:
> Tom Parson wrote: 
>
> Well, on *nix,
>    find . -name "*.java"
> will find the files
> so
>    javac `find . -name "*.java"`
>
> will compile all the files simultaneously, or at least
> compile them all "in the same context", which I think
> will solve some of the dependancy issues.
>
> All this is from guessing - I use Ant!!

The find hack will also work on Windows with Cygwin.

--
Lew

On 16 Aug 2007 10:20:53 GMT, tom.parson@gm.com (Tom Parson) wrote,
quoted or indirectly quoted someone who said :

>How do I start ?
see http://mindprod.com/jgloss/ant.html
--
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com

On Aug 16, 3:20 am, tom.par...@gm.com (Tom Parson) wrote:
> I downloaded a java source of a tool which is spread over multiple (40-50)
 *.java files
> which are located in different sub directories according to their package 
name.
>
> Unfortunately no further instructions (e.g. Ant script) are available.
> However the source should be compileable without errors.
>
> How do I start ?
>
> Which class should I compile first ?
>
> For example I found a "main()" method in java file SomeGUI.java
>
> When I switch now to the base directory of package:
>
> D:\java\base\
>
> and type at the command prompt:
>
> javac org\somepack1\subpack2\SomeGUI.java
>
> then the compiler tell me that he cannot find a file/package "org.somepack
.addclass"
> But the java file org\soempack\addclass.java EXISTS !
>
> Why does the compiler not find this class/source ?
>
> Can I somehow tell the compiler (from the command line !):
>
> "here is the source directory tree. Search for all you need and compile al
l
> necessary classes in the sequence you need".
>
> Tom

I think the best option would be to write a simple build.xml with a
<javac> task to do the job.

If non-command line, drop the com tree into a new java project in
Eclipse or use the import feature.

-cheers,
Manish

-cheers,
Manish

Hi Tom,
Tom Parson wrote:
> I downloaded a java source of a tool which is spread over multiple (40-50)
> *.java files which are located in different sub directories according to
> their package name.
>
> Unfortunately no further instructions (e.g. Ant script) are available.
> However the source should be compileable without errors.

I would suggest you'd just write a small ant file yourself which will do the
compiling. Still better than messing around with javac and compiling every
single class yourself.

Best regards,
Jan

--
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