Nedd to find basic servlet code

Java novice
I need basic servlet code that will capture the input of one form field and write it to a flat file on the server. Servlet will be called in html form action. Any good sources to start with? It appears that this is so basic that I've had trouble finding anything out there.
Thanks

If what you want is to learn the basic stuff invloved in doing what you want to do.
Just follow the java servlet tutorial and io tutorial (You can use google to reach those)

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