Need help on this working properly... it outputs a wrong result.. is it just the math operation at the bottom? What should the equation read as? private JButton buttonCalc; public Calculato...

Try dividing the rate by 1200 instead of 100

hrm. When I test it with that change, and use 350000 for amount, 30 for term and 7 for rate, the result is 1.16753711824

no, it's not. (scroll left in the result box)