How to Create a Java Bean
A Java bean is a Java class that has private member variables, public getter and setter methods, and a zero-argument, public constructor (supplied automatically by the compiler). To create a Java bean, follow these seven steps.
- Open your text editor and create a new file that will contain the Java bean source. Type in the following Java statements:
- Save your file as Person.java.
- Open your text editor to create the class that will instantiate the Java bean. Type in the following Java statements:
- Save your file as CreateAJavaBean.java.
- Open a command prompt and navigate to the directory containing your new Java programs. Then type in the command to compile the Java bean source and hit Enter.
- Type in the command to compile the Java application to instantiate the Java bean and hit Enter.
- You are ready to test your Java program. Type in the command to run the Java runtime launcher and hit Enter. Observe the data from your Java bean.
The Java bean has two properties,
lastName. A property is a private variable exposed to external programs by means of getter and setter methods.
The program will instantiate the Java bean and then call the setter and getter methods of the newly created Java bean.