Right-click the BTTJumpStartSampleRCPClient Project, and select New > package. In
the dialog box that pops up, enter com.ibm.btt.jumpstart.sample.validator in
the Package field, and click Finish.
Copy the WithdrawValidator.java from <toolkit_root>\samples\BTTJumpStartSampleRCPClient.zip\
BTTJumpStartSampleRCPClient/src/com/ibm/btt/jumpstart/sample/validator to com.ibm.btt.jumpstart.sample.validator package
of BTTJumpStartSampleRCPClient Project.
The validator is called when the teller input any words to Amount
field in withdrawProc panel:
The validator is used to check if the teller’s input is validated.