Java-ReadyJSP & Tomcat Hosting

What is JSP and Tomcat hosting?

Apache Tomcat is an open-source servlet container developed by the Apache Software Foundation. It implements Jakarta Servlet, Jakarta Pages (JSP), Expression Language and WebSocket, so Java web applications packaged as WAR files can run on it. It is used to host JSP pages and Servlet-based sites.

Licence: Apache-2.0 · Official site: tomcat.apache.org

The technologies

• Servlet: Jakarta Servlet defines a server-side Java API for handling HTTP requests and responses. A servlet is a Java class that a servlet container such as Tomcat loads and calls for matching requests.
• JSP: JavaServer Pages, now called Jakarta Pages, is a template technology that mixes HTML or XML text with custom tags, expression language and embedded Java code. Each page is compiled into a servlet.
• WAR file: A Web Application Archive is the standard package for a Java web application. It holds public files such as JSP and HTML, plus a WEB-INF folder with web.xml, compiled classes and library JARs.
• Servlet container: Tomcat is a servlet container: the runtime that loads web applications, maps URLs to servlets and JSPs, and manages their lifecycle inside a Java virtual machine.
• Jakarta EE: Jakarta EE is the continuation of Java EE under the Eclipse Foundation. Servlet, Pages, Expression Language and WebSocket are Jakarta EE specifications, and each Tomcat line implements a specific release of them.

Before you move a Java app

• Tomcat 9.0 implements Servlet 4.0 and JSP 2.3 (Java EE 8) and uses the javax.* package names.
• Tomcat 10.1 implements Servlet 6.0 and Pages 3.1 (Jakarta EE 10) and uses the jakarta.* package names.
• Tomcat 11.0 implements Servlet 6.1 and Pages 4.0 (Jakarta EE 11) and uses the jakarta.* package names.
• Moving from Tomcat 9 to 10 or later changes javax.servlet imports to jakarta.servlet, so applications must be recompiled or converted.
• The Tomcat project offers a Jakarta EE migration tool and an optional automatic conversion step for older javax-based applications.
• Java requirements differ by line: Tomcat 9.0 needs Java 8+, Tomcat 10.1 needs Java 11+, and Tomcat 11.0 needs Java 17+.
• Tomcat 8.5 and Tomcat 10.0 are listed as end-of-life on the official site.

Common uses

• Running JSP and Servlet based websites
• Hosting an existing Java web application as a WAR file
• Internal business portals built on Java web frameworks
• Learning and testing Java web development

Typical stack

• A JDK or JRE of the version the chosen Tomcat line requires
• Apache Tomcat as the servlet container
• Your application as a WAR: servlets, JSP pages, WEB-INF/web.xml and library JARs
• A relational database reached through a JDBC driver, if the application needs one
• A build tool such as Maven, Gradle or Ant to produce the WAR

Requirements

• Database: Optional. A Java application reaches a relational database through a JDBC driver for that database
• A Java runtime: Tomcat 11.0 needs Java 17 or later, 10.1 needs Java 11 or later, 9.0 needs Java 8 or later
• The application packaged as a WAR file or an unpacked web application directory
• JVM heap size is set through JVM options such as -Xmx (the Tomcat docs suggest CATALINA_OPTS for this)

Why host JSP with Hostripples

• All-NVMe storage and LiteSpeed Enterprise on cPanel
• CloudLinux account isolation with CageFS
• Free SSL, daily JetBackup backups and Imunify360 malware protection
• Free migration of your existing site, and 24×7 support in English, Hindi and Marathi
• Five locations: India, France, Poland, Canada and Singapore

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