Make javac treat warnings as errors
I have an Ant file that compiles my program. I want the javac task to fail if any warning was reported by the compiler. Any clue on how to do that?
Use the -Werror
flag. It's not listed in the -help
output, but it works.
I found it through this blog entry and tested on my own code (in NetBeans with Ant). The output was:
MyClass.java:38: warning: [serial] serializable class MyClass has no definition of serialVersionUID public class MyClass extends JComponent { 1 warning BUILD FAILED (total time: 3 seconds)
Note that this is Java 6 only, though.
Edit: Example of specifying this in Ant buildfile:
<javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath">
<compilerarg value="-Xlint:all"/>
<compilerarg value="-Werror"/>
</javac>