I'm on the technical support team here at Postcode Anywhere. With the Capture+ function at the moment it can only be done with the JavaScript snippet provided in the integration process.
We do however have JAVA code samples for all our API calls which you can use to implement the more traditional 'Click to Find' method. All the APIs can be found here:
http://www.postcodeanywhere.co.uk/address-validation/api/
For the UK the APIs that you require are the 'Find' and the 'Retrieve By ID'.