IN THIS CHAPTER
Seeing how servlets work
Dealing with page directives
Trying out expressions
Putting scriptlets to work
In Book 7, Chapter 2, you discover how to create servlets that write HTML data directly to a page by using the
PrintWriter object accessed through
response.out. Although this technique works, it has one major drawback: You have to compose the HTML manually as a bunch of string literals. If the HTML has an error, you don’t know about it until you run the servlet to see how it looks. Also, handcrafting HTML in
out.println statements certainly isn’t the most efficient way to create attractive web pages.
That’s where JavaServer Pages (a technology usually called JSP for short) comes in. A JavaServer Page is an HTML file that has Java servlet code embedded in it in special tags. When you run a ...