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One class has the data, another class wants it.
The class that wants it needs to call a method in the class that has it.
Or the class that has the data can call a method in the class that wants it...

Where are the textfields defined? Can you access them directly and call any of their methods or do you need methods in the class that contains the textfields that you can call that will get the...

Can you explain your problem?
Getting a String from a text field
Parsing a String