Dead Ink Vinyl

Robert Lougher, maintainer of the JamVM virtual machine, posted a comment to an earlier entry of mine. Rob requested more information about the problem I experienced, so I poked around a little more and responded to him. I am posting the heart of that information here for the benefits of others.

The relevant details are:
– Jetty v5.1.2
– JamVM v1.2.4
– GNU Classpath 0.13

Running the command “java -jar start.jar” produces:

java.lang.NullPointerException
  at java.text.DecimalFormatSymbols.setCurrency (DecimalFormatSymbols.java:397)
  at java.text.DecimalFormatSymbols. (DecimalFormatSymbols.java:151)
  at java.text.NumberFormat.computeInstance (NumberFormat.java:327)
  at java.text.NumberFormat.getNumberInstance (NumberFormat.java:456)
  at java.text.NumberFormat.getInstance (NumberFormat.java:381)
  at java.text.SimpleDateFormat. (SimpleDateFormat.java:218)
  at java.text.SimpleDateFormat. (SimpleDateFormat.java:202)
  at org.mortbay.util.DateCache.setTimeZone (DateCache.java:126)
  at org.mortbay.util.DateCache. (DateCache.java:87)
  at org.mortbay.log.OutputStreamLogSink. (OutputStreamLogSink.java:59)
  at java.lang.reflect.Constructor.constructNative (Native Method)
  at java.lang.reflect.Constructor.newInstance (Constructor.java:265)
  at java.lang.Class.newInstance (Class.java:1146)
  at org.mortbay.log.LogImpl.defaultInit (LogImpl.java:190)
  at org.mortbay.log.LogImpl.message (LogImpl.java:415)
  at org.mortbay.log.LogImpl.message (LogImpl.java:399)
  at org.mortbay.log.LogImpl.info (LogImpl.java:332)
  at org.mortbay.util.FileResource. (FileResource.java:60)
  at org.mortbay.util.Resource.newResource (Resource.java:113)
  at org.mortbay.jetty.Server. (Server.java:78)
  at org.mortbay.jetty.Server.main (Server.java:432)
  at java.lang.reflect.Method.invokeNative (Native Method)
  at java.lang.reflect.Method.invoke (Method.java:355)
  at org.mortbay.start.Main.invokeMain (Main.java:151)
  at org.mortbay.start.Main.start (Main.java:480)
  at org.mortbay.start.Main.main (Main.java:94)
  at java.lang.reflect.Method.invokeNative (Native Method)
  at java.lang.reflect.Method.invoke (Method.java:355)
  at jamvm.java.lang.JarLauncher.main (JarLauncher.java:50)
1113542079746: INFO :Checking Resource aliases @ [main] org.mortbay.util.FileResource.(FileResource.java:60)
java.lang.reflect.InvocationTargetException
  at java.lang.reflect.Method.invokeNative (Native Method)
  at java.lang.reflect.Method.invoke (Method.java:355)
  at org.mortbay.start.Main.invokeMain (Main.java:151)
  at org.mortbay.start.Main.start (Main.java:480)
  at org.mortbay.start.Main.main (Main.java:94)
  at java.lang.reflect.Method.invokeNative (Native Method)
  at java.lang.reflect.Method.invoke (Method.java:355)
  at jamvm.java.lang.JarLauncher.main (JarLauncher.java:50)
Caused by: java.lang.ExceptionInInitializerError
  at org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl. (Unknown Source)
  at java.lang.reflect.Constructor.constructNative (Native Method)
  at java.lang.reflect.Constructor.newInstance (Constructor.java:265)
  at java.lang.Class.newInstance (Class.java:1146)
  at org.apache.xerces.util.ObjectFactory.newInstance (Unknown Source)
  at org.apache.xerces.impl.dv.SchemaDVFactory.getInstance (Unknown Source)
  at org.apache.xerces.impl.dv.SchemaDVFactory.getInstance (Unknown Source)
  at org.apache.xerces.impl.xs.SchemaGrammar$BuiltinSchemaGrammar. (Unknown Source)
  at org.apache.xerces.impl.xs.SchemaGrammar. (Unknown Source)
  at org.apache.xerces.impl.xs.XMLSchemaValidator. (Unknown Source)
  at org.apache.xerces.parsers.IntegratedParserConfiguration.configurePipeline (Unknown Source)
  at org.apache.xerces.parsers.DTDConfiguration.reset (Unknown Source)
  at org.apache.xerces.parsers.XML11Configuration.parse (Unknown Source)
  at org.apache.xerces.parsers.DTDConfiguration.parse (Unknown Source)
  at org.apache.xerces.parsers.XMLParser.parse (Unknown Source)
  at org.apache.xerces.parsers.AbstractSAXParser.parse (Unknown Source)
  at javax.xml.parsers.SAXParser.parse (SAXParser.java:273)
  at org.mortbay.xml.XmlParser.parse (XmlParser.java:165)
  at org.mortbay.xml.XmlParser.parse (XmlParser.java:181)
  at org.mortbay.xml.XmlConfiguration. (XmlConfiguration.java:122)
  at org.mortbay.jetty.Server. (Server.java:103)
  at org.mortbay.jetty.Server. (Server.java:78)
  at org.mortbay.jetty.Server.main (Server.java:432)
  at java.lang.reflect.Method.invokeNative (Native Method)
…7 more
Caused by: java.lang.RuntimeException: internal error
  at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.applyFacets1 (Unknown Source)
  at org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl.createBuiltInTypes (Unknown Source)
  at org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl. (Unknown Source)
  at org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl. (Unknown Source)
…30 more

However, launching the application “manually” using the following command got me further (the server listens on 8080 and provides a listing of the known webapps):

java -cp /opt/jetty-5.1.2/lib/org.mortbay.jetty.jar:/opt/jetty-5.1.2/lib/javax.servlet.jar:/opt/jetty-5.1.2/ext/jasper-runtime.jar:/opt/jetty-5.1.2/ext/jasper-compiler.jar:/opt/jetty-5.1.2/ext/xercesImpl.jar:/opt/jetty-5.1.2/ext/commons-logging.jar org.mortbay.jetty.Server

So the problem might be Jetty’s, not JamVM’s.