The eight major features of PSPNum which you need to understand are:

• Size: of the decimal number i.e. the number of digits either side of the decimal place. For PSPNum, this is controlled by the encapsulated PSPDec class.
• Value: of the decimal number - how it is stored and manipulated. For PSPNum, this is controlled to a large extent by the encapsulated PSPDec class.
• Masking: to control how the numeric value is displayed in the edit box and how certain keystrokes are processed. For PSPNum, this is controlled by the encapsulated PSPDecMask class.
• Keystroke: processing specific to decimal numerics.
• Arithmetic rounding/truncation: for excess digits after the decimal place. For PSPNum, this is controlled by the encapsulated PSPDec class.
• Overflow: for excess digits before the decimal place. For PSPNum, this is controlled by the encapsulated PSPDec class.
• Persistence: how serialization is used to save critical property values for the next run of your application.
• Events: triggered by the PSPNum as a JavaBean.

The above sections contain small samples of Java code. If you want to see more complete code using PSPNum features, please look at the PSPNumDemo source i.e. the PSPNumDemo.java and PSPNumCustomizerDemo.java source files which we provide.