Java 17 Recipes

startup.bat. A second window is generated with the log of our applications.
To check that Tomcat is working properly, open a browser and type 
localhost:8080. 
You should see the page shown in Figure 
13-1
.
Figure 13-1. The localhost home page
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 How It Works
The following steps show what happens when you request your browser to view a web 
page (e.g., http://localhost:8080/) on your browser.
1. When you type an address such as 
www.website.com
 into the 
address field, your browser resolves into the corresponding 
Internet Protocol (IP) address, usually by asking the Domain 
Name System provided by your Internet Service Provider (ISP). 
Then your browser sends an HTTP (HyperText Transfer Protocol) 
request to the newly found IP address to receive the content 
required.
2. In reply, the web server sends an HTTP response containing a 
plain-text HTML (HyperText Markup Language) page. Images 
and other non-textual components, such as sound and video 
clips, only appear on the page as hyperlinks to those resources 
stored either on the same server or another server on the internet. 
The browser receives the response, interprets the HTML code 
contained in the page, requests the non-textual components from 
the server, and displays it to your screen.
A URL like http://localhost:8080/ specifies that on the host side, the port number 
for HTTP is 8080 instead of 80, which is the standard port for HTTP. This is because 
Tomcat expects and routes HTTP traffic through port 8080. This is appropriate if you 
intend to use Tomcat to handle requests for HTML/JSP pages and place it behind a 
server (typically, the Apache web server) that handles static HTTP/HTTPS. But if you 
intend to use Tomcat to handle HTTP/HTTPS, you should change its default ports 8080 
and 8443 to 80 and 443, respectively.
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