Integer Formatting Applet

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

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Answer:

  • , comma
  • . dot
  •   space

Of course, a given locale uses only one of these characters for this purpose.

Integer Formatting Applet

Here is an applet that formats an integer using DecimalFormat.format(). Enter an integer (as characters) into the text box and click on the button.

Embedded Java applet removed: modern browsers do not support Java applets. The surrounding source code is retained for historical study.

If you enter characters that can't be converted to an int, an error message will be written. Incorrect character strings include those that contain commas, dots, or spaces. The input must be unformatted. Other incorrect strings include those for integers that are too big (greater in magnitude than about two billion).

QUESTION 4:

How would you prefer to see this number displayed: 

12345.6789
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