Re: [Columba-devel] Build Warnings

[Frederik D. <ma...@fr...>]

On Thu, February 16, 2006 5:53 am, Mark Livingstone said:
> Hi Freddy,
>
> Well, I bit the bullet and installed Java 5 for myself from the jdk files
> on
> java.sun.com and it seems to be working!
>
> I did also get the Java6 but I don't have the time right now to install it
> but
> will another time.

Just a quick tip. I have all three Java versions installed in parallel.
All installed in /opt. Then I created symlinks for every version called
java4, java5, java6. Additionally, I've got one "java" symlink which
points to the currently used jdk. This is also used in the JDK_HOME env
variable.

This way I can easily switch between JDKs, without much hassle. This was
way easier in Gentoo, which had good support for different JDKs built-in.

I have now set java5 as default everywhere. When I want to start Columba
with Java6 I simply use the whole path to the jdk, like this:
"/opt/java6/bin/java -jar columba.jar"

Just my two cents.

>
> This is what I got; perhaps along with going Java5, we should also fix
> these
> deprecation issues!
>
> Cheers,
>
> MarkL
>
> compile:
>      [echo] Compile Columba core
>     [javac] Compiling 341 source files
> to /home/mlivingstone/workspace/columba/classes
>
> [javac]
> /home/mlivingstone/workspace/columba/src/columba/core/org/columba/core/print/cPrintVariable.java:143:
> warning: non-varargs call of varargs method with inexact argument type for
> last parameter;
>     [javac] cast to java.lang.Object for a varargs call
>     [javac] cast to java.lang.Object[] for a non-varargs call and to
> suppress
> this warning
>     [javac]             return (String) hit.invoke(parent, null);
>     [javac]                                                ^
>     [javac] Note: Some input files use or override a deprecated API.
>     [javac] Note: Recompile with -Xlint:deprecation for details.
>     [javac] Note: Some input files use unchecked or unsafe operations.
>     [javac] Note: Recompile with -Xlint:unchecked for details.
>     [javac] 1 warning
>     [javac] Compiling 58 source files
> to /home/mlivingstone/workspace/columba/classes


It should be sufficient to add the correct typecase to the null-assignment
to suppress the warning.

Cheers,
-Frederik