"I just want to show 2 digits after the decimal point in my future value textField"
"I am not sure where to try %0.2"
b.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        double IA = Double.parseDouble(for_ia.getText());
        double YEARS = Double.parseDouble(forYears.getText());
        double AIR = Double.parseDouble(for_air.getText());
        double FIA;
        FIA = (IA*Math.pow((1+AIR/100),YEARS));
        forFV.setText(String.valueOf(FIA));
    }
});
