


A detailed introduction to the code for implementing the Mediator pattern in Java
Class diagram
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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 } }Print
加入布局代码 预览里的组件变化了Related articles:
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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