Prevent the use of exponential notation with double numbers in GWT

Is there a way to remove the exponent from a double on the client side in GWT?

public double evaluate(final double leftOperand, final double rightOperand) {
    Double rtnValue = new Double(leftOperand * rightOperand);
        //Need code to remove exponent before returning
    return rtnValue.doubleValue();
}

Removing exponents is possible on the server side using NumberFormat:

NumberFormat formatter = new DecimalFormat("#0.00");
    System.out.println(number);
    System.out.println(formatter.format(number));

However, attempting this on the client side throws an exception:

"No source code is available for type java.text.NumberFormat; did you forget to inherit a required module?"

This is due to GWT not including the java.text library in its JRE Emulation Reference.

I also attempted using String.format("%.2f", doubleResult);, but it seems String.format() is not supported in GWT.

So, what alternatives are available to avoid exponential notation in doubles on the client side?

javajavascriptgwt

Answer №1

If you want to format a double using JavaScript with JSNI, you can try the following code:

native String format(double num) /*-{

  // Implementation in JavaScript
  var v = num;
  return "" + v.valueOf();

}-*/;

Unfortunately, I don't have access to the GWT SDK at the moment to test it out, but this should give you an idea of how it could work.

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