This week's book giveaway is in the Servlets forum. We're giving away four copies of Murach's Java Servlets and JSP and have Joel Murach on-line! See this thread for details.

In other words, take the square of the difference of your x's plus the square of the difference of the y's, and the length will be the positive square root of that sum. At heart, it's the Pythagorean theorem. Good luck, Art

"Jan L", The Java Ranch has thousands of visitors every week, many with surprisingly similar names. To avoid confusion we have a naming convention, described at http://www.javaranch.com/name.jsp . We require names to have at least two words, separated by a space, and strongly recommend that you use your full real name. Please log in again with a new name which meets the requirements. Thanks.