Java实验抽象类.docVIP

要求有一个abstract类，类名为Employee。Employee的子类有YearWorkerMonthWorker和WeekWorker。YearWorker对象按年领取薪水，MonthWorker按月领取薪水，WeekWorker按周领取薪水。利用开-闭原则，设计一个动物声音“模拟器”，希望所设计的模拟器能够模仿许多动物的叫声。下图为该程序的UML类图。package text_08; import java.util.Scanner; abstract class Employee{ public abstract double earnings(int x); } class YearWorker extends Employee{ public double earnings(int x) { System.out.println(按年领工资！+x*12*4); return x*12*4; } } class MonthWorker extends Employee{ public double earnings(int x) { System.out.println(按月领工资！+x*4); return x*4; } } class WeekWorker extends Employee{ public double earnings(int x) { System.out.println(按周领工资！+x); return x; } } public class text01 { public static void main(String[] args) { Employee[] e=new Employee[3]; e[0]=new YearWorker(); e[1]=new MonthWorker(); e[2]=new WeekWorker (); System.out.print(请输入每周的工资：); @SuppressWarnings(resource) Scanner reader=new Scanner(System.in); int x=reader.nextInt(); e[0].earnings(x); e[1].earnings(x); e[2].earnings(x); } } 2） package text_08; import java.util.Scanner; abstract class Animal{ public abstract int cry(); public abstract int getAnimalName(); } class Simulator { Animal a; public void palySound(Animal an){ an.cry(); } } class Dog extends Animal{ String name; public Dog() { super(); } public int cry() { System.out.println(狗的叫声！); return 0; } public int getAnimalName() { System.out.println(this is Dog！); return 0; } } class Cat extends Animal{ String name; public Cat() { } public int cry() { System.out.println(猫的叫声！); return 0; } public int getAnimalName() { System.out.println(this is Cat！); return 0; } } public class text02 { public static void main(String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException { @SuppressWarnings(resource) Scanner reader=new Scanner(System.in); String name=reader.next(); Animal an=(Animal) Class.forName(name).newInstance(); Simulator s=ne