This command is used used to invoke your WSDL-to-Java mapping tool. This tool generates Java interfaces from WSDL descriptions. The following are examples of commands used to invoke a WSDL-to-Java command:
For the Oracle's reference JAXWS implementation, the JCK provides a script on Solaris (TCKDIR/solaris/bin/wsimport.sh), on Windows (TCKDIR\win32\bin\wsgen.bat), and on Linux (TCKDIR/linux/bin/wsimport.sh) that maps WSDL descriptions and xsd files into java interfaces.

The wsimport script supports the following mandatory command-line options:

Usage: wsimport -b <arg> -d <dir> <wsdl files>
Options:
  -b <arg> : specifies additional jaxws or jaxb binding files; there is allowed to have more than one binding file, each should be preceded by -b option
  -d  <dir> : option is used to specify the directory in which the generated files are placed.

Type the path in the text box, or select the path from the pull-down menu.