<>DTO vs VO

<>DTO- 数据传输物体只是数据集装箱,用于在层和层之间传送数据。

• It mainly contains attributes. You can even use public attributes without getters and setters.
• Data transfer objects do not contain any business logic.

Analogy:
Simple Registration form with attributes username, password and email id.

• When this form is submitted in RegistrationServlet file you will get all the attributes from view layer to business layer where you pass the attributes to java beans and then to the DAO or the persistence layer.
• DTO s helps in transporting the attributes from view layer to business layer and finally to the persistence layer.

计算机通信组织主要用来获取通过网络有效运输的数据,甚至可能从联合仪器到另一个联合仪器。

DTOs经常是java.io.Serializable——以便把数据传输到国际交易日志。

<>strong>VO- A Value Object *** 表示自己是一套固定的数据,类似于 Java。 A 价值 物体特性基于其状态,而不是其物体特性,是不可改变的。 一个真正的世界例子是科罗拉。 RED, Color。 BLUE, SEX。 FEMALE等。

<POJO vs JavaBeans

[1] The Java-Beanness of a POJO is that its private attributes are all accessed via public getters and setters that conform to the JavaBeans conventions. e.g.

    private String foo;
    public String getFoo(){...}
    public void setFoo(String foo){...}; 

[2] JavaBeans must implement Serializable and have a no-argument constructor, whereas in POJO does not have these restrictions.

基本情况

DTO: “数据传输物体”可在软件结构中平流层之间流动。

VO: “危险物体”持有例如Integer、Finalg等物体。

POJO: Plain Old Java 不是特别物体的物体。

Java Beans: 要求有可序列使用的Java 级,每个领域有no-arg的构造器和一台接机和板

POJO : It is a java file(class) which doesn t extend or implement any other java file(class).

Bean: It is a java file(class) in which all variables are private, methods are public and appropriate getters and setters are used for accessing variables.

Normal class: It is a java file(class) which may consist of public/private/default/protected variables and which may or may not extend or implement another java file(class).

第一次会谈

Normal Class - that s mean any class define that s a normally in java it s means you create different type of method properties etc.
Bean - Bean is nothing it s only a object of that particular class using this bean you can access your java class same as object..

在那次会谈之后,法国审计署

POJO - POJO is that class which have no any services it s have only a default constructor and private property and those property for setting a value corresponding setter and getter methods. It s short form of Plain Java Object.