JavaBeans

JavaBeans are classes that encapsulate many objects into a single object (the bean), and  they are serializable.

• It provides a default, no-argument constructor.
• It should be serializable and implement the Serializable interface.
• It may have a number of properties which can be read or written.
• It may have a number of “getter” and “setter” methods for the properties.

Example

package com.chang;
import java.io.Serializable;

public class StudentsBean implements Serializable{
   private String firstName = null;
   private String lastName = null;
   private int age = 0;

   public StudentsBean(){
   }

   public String getFirstName(){
      return firstName;
   }

   public String getLastName(){
      return lastName;
   }

   public int getAge(){
      return age;
   }

   public void setFirstName(String firstName){
      this.firstName = firstName;
   }
 
   public void setLastName(String lastName){
      this.lastName = lastName;
   }

   public void setAge(Integer age){
      this.age = age;
   }
}