1、Report.java
package com.ssm.cts.pattern.decorator;
public abstract class Report {
public abstract void display();
}
2、MonthReport.java
package com.ssm.cts.pattern.decorator;
public class MonthReport extends Report {
@Override
public void display() {
System.out.println("财务月报：营业额：1亿。 利润：1000万");
}
}
3、Decorator.java
package com.ssm.cts.pattern.decorator;
public abstract class Decorator extends Report {
private Report rep;
public Decorator(Report _report){
this.rep = _report;
}
@Override
public void display() {
this.rep.display();
}
}
4、RankDecorator.java
package com.ssm.cts.pattern.decorator;
public class RankDecorator extends Decorator {
public RankDecorator(Report rep){
super(rep);
}
private void reportRank(){
System.out.println("事业部排名：营业额第二名、利润第一名");
}
@Override
public void display(){
this.reportRank();
super.display();
}
}
5、Demo.java
package com.ssm.cts.pattern.decorator;
public class Demo {
// 测试
public static void main(String[] args) {
Report rep;
// 月报
rep = new MonthReport();
// 增加排名
rep = new RankDecorator(rep);
rep.display();
}
}