Java

Java technology, created by Sun Microsystems, offers many benefits to Internet and application programmers. The JDK (Java Development Kit) enables developers to:

• Write software on one platform and run it on another.

• Create programs to run within a web browser.

• Develop server-side applications for online forums, stores, polls, processing HTML forms, and more.

There are several versions of the JDK that can be installed, or are already installed, on your Virtual Private Server. The JDK contains the Java compiler and Java executable, as well as the bulk of the standard Java libraries.

Installation

To install the JDK, do the following, depending on your Virtual Private Server O/S.

• FreeBSD

  Java 1.1.8 is available on your Virtual Private Server. To install it, simply run the following command from your Virtual Private Server SSH or Telnet command prompt:

  % vinstall jdk1.1.8

  Java 2 is not supported on FreeBSD at this time. For more information about using Java 2 on a FreeBSD server, see the following Web site:

  • FreeBSD Java Project: JDK 2

• Solaris

  To install JDK 2, connect to your Virtual Private Servers via Telnet or SSH and execute this command.

  % vinstall j2sdk-1.4

  There are also a few earlier versions of Java available on your Solaris Virtual Private Server. To install an earlier version, pick the version from the following list and run the command indicated.

  J2SDK 1.4 -

  % vinstall j2sdk-1.4

  JDK 1.1.8 -

  % vinstall jdk-1.1.8

Java Servlets and JSPs

Java Servlets and JSP (JavaServer Pages) technology provides Web developers with a simple, consistent mechanism for extending the functionality of a Web server. A servlet can almost be thought of as an applet that runs on the server side. JSP is a server-side technology that is an extension to the Java Servlet technology. JSPs have dynamic scripting capabililty that works in tandem with HTML code, separating the page logic from the static elements.