What Is a JavaBean

JSP Tutorials - Herong's Tutorial Examples

∟JavaBean Objects and "useBean" Action Elements

∟What Is a JavaBean

This section describes what is a JavaBean - a reusable software component written in Java. A JavaBean is a really Java class that conforms with some special rules: serializable, with a constructor of no argument, and supporting properties using getter/setter methods; NoClassDefFoundError Exception

What Is a JavaBean? A JavaBean is a reusable software component written in Java. A JavaBean is a really Java class that conforms with following special rules:

A JavaBean must be serializable.
A JavaBean must have a constructor with no argument.
A JavaBean must properties with getter and setter methods.

Here is my first JavaBean class that meets the above requirements:

/* CoffeeBean.java
 * Copyright (c) 2002 HerongYang.com. All Rights Reserved.
 */
package herong;
import java.io.*;
public class CoffeeBean implements Serializable {
   private String name;
   private boolean decaf;
   public CoffeeBean() {
      name = "French Roast";
      decaf = false;
   }
   public String getName() {
      return this.name;
   }
   public void setName(final String name) {
      this.name = name;
   }
   public boolean isDecaf() {
      return this.decaf;
   }
   public void setDecaf(final boolean decaf) {
      this.decaf = decaf;
   }
}