Catch Statement, Help!!!

Question

I need help with a catch statement that will give an error message when Letters are put in, i need this as im only working with numebers, Heres what i have done already. When i build the code i always get
";" expected
Thanks for your Help
jMenuKmperHourMileActionPerformed(java.awt.event.ActionEvent e)
try
String Number = ToBeConverted.getText();
double amount = new Double(Number).doubleValue();
total = (amount*.621371192);
Converted.setText("= " + total);
ToBeConverted.setEditable(false);
catch(NumberFormatException nfx)
Converted.setText(Number + " is not a valid number!");
}

Answer 1

Your try/catch statement is bad. You have too many { } brackets in there.
The format should be
try{
  // code which throws Exceptions
  String Number = ToBeConverted.getText();
  double amount = new Double(Number).doubleValue();
  total = (amount*.621371192);
  Converted.setText("= " + total);
  ToBeConverted.setEditable(false);
catch(NumberFormatException nfx){
  // error handler
  Converted.setText(Number + " is not a valid number!");
}