JFormattedTextField getValue() is returning the wrong type

Question

So this is a very strange I've found in my ever-growing project I've been working on. I have four text boxes set up. Essentially, one is the total, the second is part_one, the third part_two, and the last the_rest.
They've all been declared and initialized identically, e.g.:
JFormattedTextField total = new javax.swing.JFormattedTextField(java.text.NumberFormat.getCurrencyInstance(Locale.US));
JFormattedTextField part_one = new javax.swing.JFormattedTextField(java.text.NumberFormat.getCurrencyInstance(Locale.US));
JFormattedTextField part_two = new javax.swing.JFormattedTextField(java.text.NumberFormat.getCurrencyInstance(Locale.US));
JFormattedTextField the_rest = new javax.swing.JFormattedTextField(java.text.NumberFormat.getCurrencyInstance(Locale.US));the_rest is supposed to auto update as any of the other three are changed (the_rest = total - part_one - part_two)
However, I'm having issues updating the text boxes, as I am getting a ClassCastException when trying to calculate the_rest:
float calculated = calculateTheRest((Float)total.getValue(), (Float)part_one.getValue(), (Float)part_two.getValue());
the_rest.setValue(calculated);And my calculateTheRest() function:
private float calculateTheRest(Float total, Float part_one, Float part_two) {
        if(total == null)
            total = 0.0f;
        if(part_one== null)
            part_one = 0.0f;
        if(part_two== null)
            part_two = 0.0f;
        return total - (first + second);
}What am I doing wrong here?
Edited by: GranoblasticMan on Sep 16, 2008 7:49 AM
Fixed typos... was hand-retyping this, not copy-and-pasting.
Edited by: GranoblasticMan on Sep 16, 2008 7:51 AM
And the exact error message I'm getting is:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.Long

Answer 1

For the time being, I've changed my calculateTheRest() function:
        private float calculateTheRest(Object total, Object part_one, Object part_two) {
        if(total == null)
            total = new Float(0.0f);
        if(part_one == null)
            first = new Float(0.0f);
        if(part_two == null)
            second = new Float(0.0f);
        return convertToFloat(total) - (convertToFloat(part_one) + convertToFloat(part_two));
private float convertToFloat(Object o) {
        if(o instanceof Number)
            return ((Number)o).floatValue();
        return Float.NaN;   
}But I'm still wondering why this would happen. Do FormattedTextFields not actually store decimal values?