homework

(1)定义以下这些接口和类,并完成相关属性和方法的声明和调用.数据类型,参数列表,返回值类型等请根据题目需要自行定义.
学习接口Learning(包含方法: 预习preLearn,上课lessons,复习reveiw)
喝酒接口Drinking(包含方法: 喝酒drink, 吐throwup,耍酒疯playMad)
抽象类Person(包含属性：姓名、年龄、性别，抽象方法：谈恋爱（Love） 
学生Student是人，得会学习但不能喝酒(因为会使大脑变笨);他们还有自己的学校(school),还喜欢和朋友聊微信(chatting).
公务员Officer是人,不用学习,但经常需要喝酒应酬;他们还得经常开一些无聊的会议(meeting).
程序猿Programmer,是人,必须经常学习,较少社交所以不喝酒;他们特别喜欢写代码(coding),和修bug(debuging).

(2)在场景类Client中定义一个方法method1,在形参和实参上体现对象的多态性,在方法中进行调用,如果对象的实际类型是学生,就和朋友聊微信;如果是公务员,就去开会;如果是程序猿,就去写代码和修bug.

(3)直接打印一个学生对象,就能以下面格式来输出:
学生信息:  姓名:张三,性别:男,年龄:20,学校:北大.

(4)如果两个学生的姓名、性别、年龄、学校一样，则认为这两个学生“相等”。

学习接口Learning：

package homework;

public interface Learning {
	public abstract void preLearn();
	public abstract void lessons();
	public abstract void review();
}

喝酒接口Drinking：

package homework;

public interface Drinking {
	public abstract void drink();
	public abstract void throwUp();
	public abstract void playMad();
}

抽象类Person:

package homework;
public abstract class Person {
	private String name;
	private String sex;
	private int age;
	
	public Person() {
		super();
	}

	public Person(String name, String sex, int age) {
		super();
		this.name = name;
		this.sex = sex;
		this.age = age;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public abstract void love();
	public void work(){
		
	}
}

学生类Student继承Person类实现Learning接口：

package homework;

public class Student extends Person implements Learning{
	private String school;
	public Student() {
	}
	public Student(String name,String sex,int age, String school){
		super(name, sex, age);
		this.school=school;
	}
	
	public String getSchool() {
		return school;
	}
	public void setSchool(String school) {
		this.school = school;
	}
	@Override
	public void love() {

	}

	@Override
	public void preLearn() {

	}

	@Override
	public void lessons() {
		
	}

	@Override
	public void review() {
		
	}
	public void chatting(){
		System.out.println("学生和朋友聊微信");
	}
	@Override
	public String toString() {
		return "姓名:"+getName()+",性别:"+getSex()+",年龄:"+getAge()+",学校:"+getSchool();
	}
	@Override
	public boolean equals(Object object) {
		if(object==null){
			return false;
		}else if(object==this){
			return true;
		}else if(!(object instanceof Student)){
			return false;
		}
		Student student=(Student)object;
		if(getName().equals(student.getName()) && getSex().equals(student.getSex()) && getAge()==student.getAge() && school.equals(student.school)){
			return true;
		}
		return false;
	}
}

公务员Officer继承Person类实现Drinking接口：

package homework;

public class Officer extends Person implements Drinking{

	@Override
	public void drink() {
	
	}

	@Override
	public void throwUp() {
	
	}

	@Override
	public void playMad() {
	
	}

	@Override
	public void love() {
		
	}
	public void meeting(){
		System.out.println("公务员去开会");
	}
}

程序猿Programmer类继承Person类实现Learning接口：

package homework;
public class Programmer extends Person implements Learning{

	@Override
	public void preLearn() {
	}

	@Override
	public void lessons() {
	}

	@Override
	public void review() {
	}

	@Override
	public void love() {
	}
	public void coding(){
		System.out.println("程序员写代码");
	}
	public void debuging(){
		System.out.println("程序员修bug");
	}
}

场景类Client:

package homework;

public class Client {
	public void method1(Person person){
		if(person==null){
		System.out.println("不能传空值");	
		}else if(person instanceof Student){
			Student student=(Student)person;
			student.chatting();
		}else if(person instanceof Programmer){
			Programmer programmer=(Programmer)person;
			programmer.coding();
			programmer.debuging();
		}else if(person instanceof Officer){
			Officer officer=new Officer();
			officer.meeting();
		}
	}
}

测试类Test：

package homework;

public class Test {
	public static void main(String[] args){
		Student student1=new Student();
		Client client=new Client();
		//学生和朋友聊天
		client.method1(student1);
		Person programmer=new Programmer();//向上转型
		//程序员改代码、修bug
		client.method1(programmer);
		//公务员开会
		client.method1(new Officer());
		
		Student student=new Student("张三","男",20,"北大");
		System.out.println(student);
		Student student2=new Student("张三","男",20,"北大");
		System.out.println(student.equals(student2)?"学生相等":"学生不相等");
		
	}
	
}