![]() |
The Java Developers Almanac 1.4Order this book from Amazon. |
e1047. Running Java Code in a JSP PageJava code fragments in a JSP page is called a scriptlet. This example demonstrates how to include scriptlets in a JSP page. Use theout variable to add text to the generated output:
<% double rand = Math.random(); if (rand < .1) { out.println("you win!"); } else { out.println("try again"); } %>This example defines a method that can be used in a scriptlet in the page: <%! String getMsg() { double rand = Math.random(); if (rand < .1) { return "you win!"; } else { return "try again"; } } %> <% // Use the method out.println(getMsg()); %>There are a number of implicit objects available to scriptlets - application , config , exception , out ,
pageContext , request , response , and session .
These implicit objects are described in the JSP 1.2 Specification
available at http://java.sun.com.
e1048. Saving Data in a JSP Page e1049. Implementing a Form in a JSP Page e1050. Implementing a Form That Prevents Duplicate Submissions in a JSP Page e1051. Precompiling a JSP Page e1052. Preventing the Creation of a Session in a JSP Page
© 2002 Addison-Wesley. |