Causes of getting a java.lang.VerifyError

by

I’m investigating the following java.lang.VerifyError

java.lang.VerifyError: (class: be/post/ehr/wfm/application/serviceorganization/report/DisplayReportServlet, method: getMonthData signature: (IILjava/util/Collection;Ljava/util/Collection;Ljava/util/HashMap;Ljava/util/Collection;Ljava/util/Locale;Lorg/apache/struts/util/MessageRe˜̴Mt̴MÚw€mçw€mp:”MŒŒ
                at java.lang.Class.getDeclaredConstructors0(Native Method)
                at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
                at java.lang.Class.getConstructor0(Class.java:2671)

It occurs when the jboss server in which the servlet is deployed is started.
It is compiled with jdk-1.5.0_11 and I tried to recompile it with jdk-1.5.0_15 without succes. That is the compilation runs fine but when deployed, the java.lang.VerifyError occurs.

When I changed the method name and got the following error:

java.lang.VerifyError: (class: be/post/ehr/wfm/application/serviceorganization/report/DisplayReportServlet, method: getMD signature: (IILjava/util/Collection;Lj    ava/util/Collection;Ljava/util/HashMap;Ljava/util/Collection;Ljava/util/Locale;Lorg/apache/struts/util/MessageResources ØÅN|ØÅNÚw€mçw€mX#ÖM|XÔM
            at java.lang.Class.getDeclaredConstructors0(Native Method)
            at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357
            at java.lang.Class.getConstructor0(Class.java:2671)
            at java.lang.Class.newInstance0(Class.java:321)
            at java.lang.Class.newInstance(Class.java:303)

You can see that more of the method signature is shown.

The actual method signature is

  private PgasePdfTable getMonthData(int month, int year, Collection dayTypes,
                          Collection calendarDays,
                          HashMap bcSpecialDays,
                          Collection activityPeriods,
                          Locale locale, MessageResources resources) throws   Exception {

I already tried looking at it with javap and that gives the method signature as it should be.

When my other colleagues check out the code, compile it and deploy it, they have the same problem. When the build server picks up the code and deploys it on development or testing environments (HPUX), the same error occurs. Also an automated testing machine running Ubuntu shows the same error during server startup.

The rest of the application runs okay, only that one servlet is out of order.
Any ideas where to look would be helpful.

25 Answers
25

Leave a Comment