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Editorial Team
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Asked: 2026-05-23T22:19:42+00:00

tomcat 7.0.16 Java 1.6.0_22 CentOS 5.6 I just switched the web.xml to servlet 3.0

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  • tomcat 7.0.16
  • Java 1.6.0_22
  • CentOS 5.6

I just switched the web.xml to servlet 3.0 (from a app running 2.4 previously) and now I’m seeing the following error (turned on fine logging for org.apache.tomcat.util):

mtyson  FINE: Scanning JAR [file:/usr/java/jdk1.6.0_22/jre/lib/ext/jcharset.jar] from classpath
mtyson  Jul 19, 2011 10:04:40 AM org.apache.catalina.startup.HostConfig deployDirectory
mtyson  SEVERE: Error deploying web application directory ROOT
mtyson  org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 60

UPDATE: Just Tried tomcat 7.0.19 – same results

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1 Answer

  1. Editorial Team

    It may not be your issue, but mine was the same as this one — an old version of com.ibm.icu:icu4j. I solved the problem by changing my build configuration to exclude the older transitive dependencies and explicitly depending upon the latest version (4.8).

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