Calculator Applet Question

I'm working on a calculator applet. When I try to divide by 0 (like, 1/0), I want it to output a message (like, "You cannot divide by 0"). At the moment, if I try to divide by 0, it outputs "Infinity". Here's my code:

Code:

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class DivOperation extends MathOperation
{
  public double operate(double operand1, double operand2)
  {
      return operand1 / operand2;
  }
}

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Since the return type of the method is double, it won't let me return a String filled with the message. Any idea how I could do this?

For floating point operations. Division by 0.0 will produce INF (4.0/0.0). Just have a method throw an ArithmeticException. Catch the exception that is thrown then print a message.

Code:

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public static double operate(double operand1, double operand2) throws ArithmeticException{
      return operand1 / operand2;
  }

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