NullPointerException

Brought to you by: mkung, scud1

NullPointerException

Forum: Help

Created: 2003-06-11

Updated: 2003-06-24

brian - 2003-06-11

hi everyone

when i run the marsproject batch file,
it creates a new simulation then says:
exception in thread "main" java.lang.NullPointerException

when i tried "java -cp . MarsProject" from DOS i got
exception in thread "main"
java.lang.NoClassDefFoundError: com/microstar/xml/Handlerbase

i have also tried including all directories but no luck
sorry but im kinda new to java
thanks for your help

Brian

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- brian - 2003-06-11
  
  this was using winxp, and latest J2RE
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Scott Davis - 2003-06-24
  
  Brian,
  
  There are a couple of JAR files you'll need to include in the classpath. Here's the line we use in the script to start it:
  java -classpath .;jars\jfreechart.jar;jars\aelfred.jar MarsProject
  
  Note: Be sure to put the application in a directory with no spaces in its name and has no parent directories with spaces in their names. This causes the program not to find data files properly.
  
  Let me know if this helps,
  
  Scott Davis
  Mars Simulation Project
  http://mars-sim.sourceforge.net
  scud1@users.sourceforge.net
  
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