Javabean和EJB之间的差异

问题描述

JavaBean和EJB之间有什么区别？

解决方案

Java bean只是一组约定。 EJB是J2EE业务组件的标准。

具体来说，一个Java bean：

• 具有公共默认构造函数;


• 可读属性方法先于get;


• 可写属性方法先于set;


• 是可序列化的。

例如，具有margin属性的Java bean 最少会像这样：

  public class MyBean implements Serializable {
 private int margin; 
 
 public MyBean（）{} 
 public int getMargin（）{return margin; } 
 public void setMargin（int margin）{this.margin = margin; } 
} 
  

EJB尽管名称几乎完全不相关。

Just a simple question from a relative Java newbie:

what is the difference between a JavaBean and an EJB?

解决方案

Java bean is just a set of conventions. EJB is a standard for J2EE business components.

Specifically a Java bean:

• has a public default constructor;
• readable property methods precedes with "get";
• writable property methods precedes with "set"; and
• is Serializable.

For example, a Java bean with a property of "margin" would minimally look like this:

public class MyBean implements Serializable {
  private int margin;

  public MyBean() { }
  public int getMargin() { return margin; }
  public void setMargin(int margin) { this.margin = margin; }
}

EJB, despite the name, is almost completely unrelated.

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