You can then write a simple Java program to test whether the JDK has been installed successfully:
Class Hello
{
public static void Main (string[] args)
{
System.out.println ("Hello world! Test me! ");
}
}
Saves the above program as a file with a file name of Hello.java.
and then open the Command Prompt window, the CD to your Test.java directory, and then type the following command
Javac hello.java
java Hello
If you see it printed right now, Hello W orld! Test me! If the installation is successful, if you do not print out this sentence, you need to carefully check your configuration.
1.2.2. Install Tomcat
I am installing Apache-tomcat-5.5.20.exe
General Software Installation like this, here I install in F:/program files/apache Software Foundation/tomcat 5.5
This version of TOMCAT does not create environment variables;
There are data requirements to create environment variables:
in turn, My Computer-> properties-> Advanced-> environment variable (N)-> new
Variable name: tomcat_home, variable value is C:/Program files/tomcat5.5 The
then modifies the classpath in the environment variable, tomat the Common/lib under the installation directory (which can be appended to the actual append) Servlet.jar to Classpath, and the modified classpath is as follows:
.; %java_home%/lib;%java_home%/lib/dt.jar;%java_home%/lib/tools.jar;%tomcat_home%/common/lib/servlet.jar;
You can then start Tomcat, run Tomcat,f:/program files/apache Software foundation/tomcat 5.5/bin/tomcat5.exe
You can then enter it in the browser: http://localhost:8080 can see the default page for Tomcat.
Write first JSP program
<%@ page contenttype= "text/html;charset=gb2312"%>
<%@ page language= "java"%>
<title> First JSP program </title>
<body>
<%out.println ("Hello world!"); %>
</body>
Create a new directory under the WebApps directory, called MyApps;
Save it to F:/program Files/apache Software foundation/tomcat 5.5/webapps/myapps/hello.jsp
Then you can enter http://localhost:8080/myapps/hello.jsp in the browser to a Web page,
Output on this page:
Hello World.
If not, you can try: http://127.0.0.1:8080/myapps/hello.jsp,
That should be it.
Here is an example of how the current system time will be displayed:
<%@ page contenttype= "text/html;charset=gb2312"%>
<%@ page language= "java"%>
<title> Current system Time </title>
<body>
<%= new Java.util.Date ()%>
</body>
Transferred from "http://www.cnblogs.com/welland/archive/2007/01/24/629412.html"
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