####OUTPUT######
#PASSING CASE

c:\BUILD_DIRECTORY>perl test.pl
Buildfile: build.xml
Trying to override old definition of task javac

clean:

BUILD SUCCESSFUL
Total time: 0 seconds
RETURN VALUE: 0
CHILD_ERROR_NATIVE: 0

c:\BUILD_DIRECTORY>ant clean
Buildfile: build.xml
Trying to override old definition of task javac

clean:

BUILD SUCCESSFUL
Total time: 0 seconds
c:\BUILD_DIRECTORY>echo %ERRORLEVEL%
0    <-------------------------------

# FAILING CASE

c:\NOT_BUILD_DIRECTORY>perl jet\test.pl
Buildfile: build.xml does not exist!
Build failed
RETURN VALUE: 0
CHILD_ERROR_NATIVE: 0

c:\NOT_BUILD_DIRECTORY>ant clean
Buildfile: build.xml does not exist!
Build failed
c:\NOT_BUILD_DIRECTORY>echo %ERRORLEVEL%
1    <-------------------------