This sample demostrates the use of code generation using Axis2/Java WSDL2Java
tool (Axis2/Java source revision 414253).

sample source        test_Calcultor.c
wsdl                 $AXIS2C_HOME/test/resources/wsdl/Calculator.wsdl

Command to execute the code generation: 
WSDL2Code 
-uri <wsdl> -l  c -d none