接口分离原则

package demo;//接口分离原则interface Guest {// 这里定义浏览者只有查看权限void see();}interface Master {//这里定义版主有查看和修改权限void see();void change();}interface Admin {//这里定义管理员有查看、修改和删除权限void see();void change();void delete();}class CreateLimit implements Guest, Master, Admin {private CreateLimit() {}public static Guest user() {return (Guest) new CreateLimit();}public static Master master() {return (Master) new CreateLimit();}public static Admin admin() {return (Admin) new CreateLimit();}public void see() {System.out.println("你有查看权限");}public void change() {System.out.println("你有修改权限");}public void delete() {System.out.println("你有删除");}}public class Demo_20 {public static void main(String[] args) {Guest user = CreateLimit.user();user.see();System.out.println("-------------------------");Master master = CreateLimit.master();master.see();master.change();System.out.println("-------------------------");Admin admin = CreateLimit.admin();admin.see();admin.change();admin.delete();}}

输出结果
你有查看权限
-------------------------
你有查看权限
你有修改权限
-------------------------
你有查看权限
你有修改权限
你有删除