jsp
Use Java Code in JSP page
With this example we are going to demonstrate how to use Java code in a JSP page. JavaServer Pages (JSP) is a server-side programming technology that enables the creation of dynamic, platform-independent method for building Web-based applications. JSP have access to the entire family of Java APIs, including the JDBC API to access enterprise databases. In short, to use Java code in a JSP page you should:
- Create a jsp page that contains the
<%code fragment%>scriptlet. It can contain any number of JAVA language statements, variable or method declarations, or expressions that are valid in the page scripting language. - Keep any html tags in the page outside the scriptlet.
- Use the
importattribute inside the<%@ page ... %>directive to define any packages for use in the page, just like the Javaimportstatement does for Java classes.
Let’s take a look at the code snippet that follows:
UseJavaCode.jsp
<%@ page import="java.util.Random"%><html><head><title>Java Code Geeks Snippets - Use Java Code in JSP Page</title></head><body>Random Generator - Java Code Geeks Snippets<% System.out.println(); %><% Random random = new Random();System.out.println("Random: " + random.nextBoolean());%></body>URL:
http://myhost:8080/jcgsnippets/UseJavaCode.jspOutput:
Random Generator - Java Code Geeks SnippetsRandom: true
This was an example of how to use Java code in a JSP page.
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Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor atJava Code Geeks.
