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A detailed introduction to the code for implementing the Mediator pattern in Java
A detailed introduction to the code for implementing the Mediator pattern in Java
Class diagram
##
public interface IMediator {
public void createMediator();
public void work();
}/**
* 中介、调节实际上需要交互的两个元素，让其松耦合
* @author stone
*
*/
public class Mediator implements IMediator {
private XmlCode xmlCode;
private XmlPreview xmlPreview;
@Override
public void createMediator() {
this.xmlCode = new XmlCode();
this.xmlPreview = new XmlPreview();
}
@Override
public void work() {
this.xmlCode.work();
this.xmlPreview.work();
}
}public interface IWork {
void work();
}/**
* 本类描述Android布局里的 预览界面
* 在预览界面中拖拽组件，代码会变化
* @author stone
*
*/
public class XmlPreview implements IWork {
@Override
public void work() {
System.out.println("预览里的组件变化了");
}
}/**
* 本类描述Android布局里的 xml代码
* 加入了代码，预览界面会变化
* @author stone
*
*/
public class XmlCode implements IWork {
@Override
public void work() {
System.out.println("加入布局代码");
}
}/*
* 中介者(Mediator)模式 Mediator的意思是中介者、调节者、传递物,顾名思义,这个模式在程式中必然负担一个中介、调节、传递的工作
* 中介者使各对象不需要显式地相互引用,从而使其耦合松散,而且可以独立地改变它们之间的交互
*/
public class Test {
public static void main(String[] args) {
IMediator mediator = new Mediator();
mediator.createMediator();//内部创建元素，维护元素
mediator.work();//执行内部元素的work接口
}
}加入布局代码 预览里的组件变化了
Mediator of java design pattern Pattern
Introduction to the chain of responsibility pattern of Java design patterns
Introduction to the proxy pattern (Proxy pattern) of Java design patterns
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