I have a java program where users can enter data into the textfields and click a simulate button to show the results in a jtable based on distribution calculations. I'm having trouble with distributions (normal,exponential, uniform, and weibel) in java and i need help getting the entered data to add rows based on a number in a textfield and show the results of the calculations in a jtable. Any help would be appreciated.

That is so vague that nobody knows how to respond. It's like "I'm having difficulty driving from Boston to Washington, please help". Please be very specific about what you have already done, what you need to achieve, and where/why you are stuck.