The idea of constrained properties in Java is not new. Since JDK 1.1, a legion of JavaBeans developers has used a powerful framework found in the java.beans package to enforce data-validation ...

If you've written many full-blown applications in Java, especially ones in which input is accepted from a Web form or a Swing GUI, you've probably spent some time writing validation code -- that ...

So I'm just starting to learn Java, I'm fumbling my way through my first program that isn't some version of Hello World. The program is actually working, there are a few other sections, but in ...