Jar file for version 0.45.0 is compiled for code coverage

[jensli]

Describe The Bug

The jar file for version 0.45.0 that is deployed Maven central seems to by mistake be compiled for code coverage using the tool Cobertura. The byte-code of the classes in the jar file reference Cobertura classes.

The result is that Fax4J 0.45.0 from Maven central is not usable. Any application using it crashes with a NoClassDefFoundError (if Cobertura is not on the class path).

This seems to be the same issue that was reported here: #37

But the reporter of that issue failed to provide any details, so the problem could not be identified.

To Reproduce

Method 1

Run any application that creates a FaxClientFactory, without having Cobertura on the class-path. Observe the stack trace printout.

Method 2

1. Download the jar from Maven central: https://repo1.maven.org/maven2/net/sf/fax4j/fax4j/0.45.0/fax4j-0.45.0.jar
2. Unzip the jar.
3. Run command javap -p -c fax4j-0.45.0/org/fax4j/FaxClientFactory.class
4. Observe that the byte code printout contain references to Cobertura:

$ javap -p -c fax4j-0.45.0/org/fax4j/FaxClientFactory.class
Compiled from "FaxClientFactory.java"
public final class org.fax4j.FaxClientFactory {
  public static final transient int[] __cobertura_counters;
...
  static {};
    Code:
       0: invokestatic  #27                 // Method __cobertura_init:()V
       3: return

  public static void __cobertura_init();
    Code:
       0: getstatic     #16                 // Field __cobertura_counters:[I
       3: ifnonnull     18
       6: ldc           #132                // int 21
       8: newarray       int
      10: putstatic     #16                 // Field __cobertura_counters:[I
      13: ldc           #133                // String org/fax4j/FaxClientFactory
      15: invokestatic  #139                // Method net/sourceforge/cobertura/coveragedata/TouchCollector.registerClass:(Ljava/lang/String;)V
      18: return
...
}

Error Stack

--- exec:3.0.0:exec (default-cli) @ FaxSender ---
Exception in thread "main" java.lang.NoClassDefFoundError: net/sourceforge/cobertura/coveragedata/TouchCollector
  at org.fax4j.FaxClientFactory.__cobertura_init(FaxClientFactory.java)
  at org.fax4j.FaxClientFactory.<clinit>(FaxClientFactory.java)
  at se.myproject.send.Fax.<init>(Fax.java:73)
  at se.myproject.Main.main(Main.java:73)
Caused by: java.lang.ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector
  at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
  at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
  ... 4 more

Code Sample

Any code that creates a FaxClientFactory will trigger the error.

Other

Thanks for a nice and useful project! :)

[sagiegurari]

thanks for reporting. will try to resolve it