JavaBean are pure Java classes, used to represent entities in Java programs. Today I will show you how to create and use JavaBean in Java Web programming with JSP.
A JavaBean class will have three syntactical features:
1. Is a public class 2. Has private properties 3. For each property, the class will provide a setter / getter method pair to access and manipulate the value of each property.
Viewing: What is Javabean
+ setter: These are methods that allow you to set the value of a property. + getter: These are methods that allow accessing and retrieving the value of a property.
Open a Java editor, here I use NetBeans IDE. Create a new Java Web Project. Name the project and select the folder path containing the newly created project.
Reference: > Java installation guide > NetBeans installation guide > Eclipse installation guide > Top 7 best Java IDEs
Create a Java class to represent JavaBean. Here we define a class named NhanVien. Declare properties, then create setter/getter method pairs.
See also: What is the Swot Matrix – Detailed Analysis of Swot in Business
We create a JSP page to write the interface code that uses JavaBean. Then we call the methods of JavaBean. Can be used in 1 of 2 ways:
Then display the result on the JSP page. Below is an illustration of how I have accessed JavaBean in two ways.
Used to locate or create JavaBean objects. : Used to set the value of a JavaBean property. : Used to get (get) the property value of JavaBean.
The useBean action declares a JavaBean for use in a JSP. Once declared, the bean becomes a script variable that can be accessed by both script elements and other custom tags used in the JSP. The full syntax for the useBean tag is as follows:
< jsp:useBean id = "Bean Name" scope = "Bean's scope" typeSpec />
Here the values for the scope property can be: One page One request One session or based on application request The value of the id attribute (Bean Name) can be any value as long as it is a unique name among other useBean declarations in the same JSP.
Congratulations on understanding more about how to use JavaBean in JSP
Thus, through this article, I showed you how to create and use JavaBean in JSP. You will still encounter and use JavaBean a lot when learning Java Web programming with JSP and Servlet. > Not only teaching about Java, Java Web. The Java course at NIIT – ICT Hanoi also teaches about Framework to help you perfect the technology suite with Java language. Study and work now! Study well. Reference: https://docs.oracle.com/javase/7/docs/api/java/beans/package-summary.html
Teaching High Quality Programming (Since 2002). Learn to be a Programmer. Act now!
#niit #riclix.com #niiticthanoi #hoclaptrinh #khoahoclaptrinh #hoclaptrinhjava #hoclaptrinhphp #python #java #php
Learn Full Stack Programmer with a methodical, focused and intensive learning path for beginners. Learn and do real projects with the direct support of leading software enterprises.
See more: What is ISO 9000 – What is ISO 9001: 2008
Learn Java programming Fullstack with a course built according to a methodical route, from JAVA BASIC to JAVA WEB and advanced on JAVA FRAMEWORK such as: Spring Boot, Hibernate
PHP Programming with Laravel Framework course was built by NIIT – ICT HANOI to perfect your web programming skills you already know Pure PHP Web Programming.
Full stack PHP Programming Course, 8th updated version. Teaching PHP Programming from Front end to Back end + Laravel. How to make 2 big Web Projects
Sign up to receive the latest information about the latest scholarships at NIIT – ICT Hanoi
3rd floor, 25T2, N05, Nguyen Thi Thap, Cau Giay, Hanoi 02435574074 – 0968051561 hello
Featured Course Full Stack PHP Course <2021> for Beginners PHP Programming with Laravel Framework PYTHON Course (IPD2021) for Beginners Excel VBA Course (Basic)
Hanoi ICT Informatics Center. Address: 3rd floor, 25T2, N05, Nguyen Thi Thap, Cau Giay, Hanoi. Email: hello
riclix.com. Tel: 0243.557.4074. Registration Number: A-2277. Issue date: September 1, 2020. Place of issue: Ministry of Science and Technology
6260+ students have studied at NIIT – ICT Hanoi and have good jobs in the programming industry. Grab the opportunity today.