How to see full ant build error that is cut off

Question

I am currently working on a java project with existing sources. An existing build.xml for ant is there, but compiling and generating wsdl file is failing.

Anyhow using ant -v the output is still cut off leaving me with not enough information to find the problem.

Output where the error occurs:

    GenerateServer-Config.wsdd:
         [echo] generate server-config.wsdd for webservice
         [java] Exception in thread "main" java.lang.ExceptionInInitializerError
         [java]     at java.lang.Class.forName0(Native Method)
         [java]     at java.lang.Class.forName(Class.java:270)
         [java]     at org.apache.axis.utils.ClassUtils$2.run(ClassUtils.java:177)
         [java]     at java.security.AccessController.doPrivileged(Native Method)
         [java]     at org.apache.axis.utils.ClassUtils.loadClass(ClassUtils.java:160)
         [java]     at org.apache.axis.utils.ClassUtils.forName(ClassUtils.java:100)
         [java]     at org.apache.axis.deployment.wsdd.WSDDTypeMapping.getLanguageSpecificType(WSDDTypeMapping.java:183)
         [java]     at org.apache.axis.deployment.wsdd.WSDDService.deployTypeMapping(WSDDService.java:542)
         [java]     at org.apache.axis.deployment.wsdd.WSDDService.initTMR(WSDDService.java:253)
         [java]     at org.apache.axis.deployment.wsdd.WSDDService.<init>(WSDDService.java:233)
         [java]     at org.apache.axis.deployment.wsdd.WSDDDeployment.<init>(WSDDDeployment.java:192)
         [java]     at org.apache.axis.deployment.wsdd.WSDDDocument.setDocument(WSDDDocument.java:139)
         [java]     at org.apache.axis.deployment.wsdd.WSDDDocument.<init>(WSDDDocument.java:65)
         [java]     at org.apache.axis.configuration.FileProvider.configureEngine(FileProvider.java:179)
         [java]     at org.apache.axis.AxisEngine.init(AxisEngine.java:172)
         [java]     at org.apache.axis.AxisEngine.<init>(AxisEngine.java:156)
         [java]     at org.apache.axis.server.AxisServer.<init>(AxisServer.java:88)
         [java]     at org.apache.axis.server.AxisServer.<init>(AxisServer.java:83)
         [java]     at org.apache.axis.utils.Admin.main(Admin.java:289)
         [java] Caused by: java.lang.NullPointerException
         [java]     at java.io.FileOutputStream.<init>(FileOutputStream.java:212)
         [java]     at java.io.FileOutputStream.<init>(FileOutputStream.java:142)
         [java]     at org.apache.log4j.FileAppender.setFile(FileAppender.java:272)
         [java]     at org.apache.log4j.FileAppender.<init>(FileAppender.java:96)
         [java]     at org.apache.log4j.FileAppender.<init>(FileAppender.java:107)
         [java]     at de.atip.Log.createAppender(Log.java:103)
         [java]     at de.atip.Log.<init>(Log.java:78)
         [java]     at de.atip.voxguard.UserInfo.<clinit>(UserInfo.java:33)
         [java]     ... 19 more

BUILD FAILED

So I can see there are 19 more error messages - but even with verbose mode ant does not tell me them. Is there any way to output those errors?

Answer 1

From the Javadoc for Throwable.printStacktrace:

Note the presence of lines containing the characters "...". These lines indicate that the remainder of the stack trace for this exception matches the indicated number of frames from the bottom of the stack trace of the exception that was caused by this exception (the "enclosing" exception). This shorthand can greatly reduce the length of the output in the common case where a wrapped exception is thrown from same method as the "causative exception" is caught.

In other words the rest of the stack trace for your NullPointerException is the same as the trace for ExceptionInInitializerError.