1 public class Ornament { 2  3     public static void main(String[] args) { 4         Personnel personnel = new Personnel(); 5         CompanyA companyA = new CompanyA(); 6         CompanyB companyB = new CompanyB(); 7         companyA.MakeUp(personnel); 8         companyA.logo(); 9         companyA.per();10         companyB.MakeUp(personnel);11         companyB.logo();12         companyB.per();13     }14 }15 //人员类16 class Personnel{17     public void per() {18         System.out.println("在工作");19     }20 }21 //公司类22 class Company extends Personnel{23     protected Personnel personnel;24     public void MakeUp(Personnel personnel) {25         this.personnel = personnel;26     }27     public void per() {28         if(personnel != null) personnel.per();29     }30 }31 //A公司32 class CompanyA extends Company{33 34     public void logo() {35         System.out.println("A公司");36     }37     public void work() {38         System.out.print("UI");39     }40     public void per() {41         work();42         super.per();43     }44 }45 //B公司46 class CompanyB extends Company{47 48     public void logo() {49         System.out.println("B公司");50     }51     public void work() {52         System.out.print("Java");53     }54     public void per() {55         work();56         super.per();57     }58     59 }

输出：