Introduction to JavaBean and simple examples

If you can't write JavaBeans, you're not a java developer. So, what is a JavaBean? JavaBeans are Java components that conform to certain specifications, that is, Java classes. It must meet the following specifications: 1) it must have a default constructor with zero parameters, 2) it must have get and set methods, and the fields of the class must be accessed through get and set methods. (the get method has no parameters and the set method has parameters) let's take a JavaBean example. Generally, the user name and password are required for web page login. We can store the user name and password in the JavaBean. The code is as follows: