Converting from String to float and vice versa

I'm interested in people's thoughts on where common logic to convert between various field types should be stored in an application to minimise code duplication and maintenance.
I have an application which consists of an object and a jPanel which displays and maintains this object. The object contains a number of private float fields which are accessed by getters and setters. The jPanel contains one jTextField for each of the fields within the object.
Currently I have numerous lines of code in the jPanel to convert between the values needed by the getters and setters in the object (i.e. float) and the String value used by the jTextFields. This code handles cases where the String value may be blank or null.
I've thought that one alternative to having all this conversion/validation code in the jPanel is to create a second set of getters and setters for each field which accept and return String values.
What do people think about this? Is it advisable for only have one getter and setter for a variable? Should I put the conversion/validation logic for each field into a seperate common routine?
Thanks,
James.

Hi James,
You should go with whatever works best for you. By creating multiple getters and setter you save yourself from repeating the same code throughout your program.

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