How do i activate the submit button in a java applet to add up all totals and display change

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Hi ,
I have created a submit button sButton; that should take all totals from 3 boxes and if that total is greater than 1, then it should be subtracted from 1 and the remainder is suppose to be displayed as change...this is what i have

Java

if(evt.getSource()==sButton)
{
   change.setText(---'I DON'T KNOW WHAT TO PUT HERE')
   selections.setText('Vending....');
}

and in another class to add up the 3 totals i have

Java

public String total5()
{
    total5=total+total2+total3+total4;
    String blank =new String();
    blank=''+total5;
    return blank;
}

so my question is how do i use the total5 to compare if it's over 1 or less and display if it's over in the "change.setText( )"; text box?

Posted 6-Apr-10 21:01pm

minime21

Updated 2-Nov-10 6:45am

Nagy Vilmos

v2

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Nagy Vilmos 2-Nov-10 12:45pm

Updated with pre-tags

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Nagy Vilmos · Answer 1 · 2010-11-02T06:49:00

If you change total method to return a number:

Java

double getTotal()
{
   return (total+total2+total3+total4);
}

You can then use it in your event handler:

Java

if(evt.getSource()==sButton)
{
   double total = obj.getTotal();
   if (total < 1)
   {
      change.setText("Not enough");
      return;
   }

   change.setText("Change $" + (total-1);
   selections.setText("Vending....");
}

How do i activate the submit button in a java applet to add up all totals and display change

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