failonerror= “false”

<target name="compile"> 
<javac destdir="${classes}" debug="on"  deprecation= "false"   optimize= "true"   fork= "no "   verbose= "no "  failonerror= "on " >  <src path="${src}" /> 
<src path="${src}" /> 
<classpath refid="compile.dependency" /> 
</javac> 
<copy todir="${classes}"> 
<fileset dir="${src}" excludes="**/*.java"/> 
</copy> 
</target> 

Q.E.D.