Java 疯狂java第五章习题

Java 疯狂java第五章习题

1、编写一个学生类，提供name、age、gender、phone、address、email成员变量，且为每个成员变量提供setter、getter方法。为学生类提供默认的构造器和带所有成员变量的构造器。为学生类提供方法，用于描绘吃、喝、玩、乐。
2、利用第一题定义的Student类，定义一个Student[]数组保存多个Student对象作为通讯录数据。程序可以通过name、email、address查询，如查不到数据，则进行友好提示。

package five;

import java.util.Scanner;

import static java.lang.System.*;

public class Student {
    private String name;
    private int age;
    private String gender;
    private String phone;
    private String address;
    private String email;

    //默认构造器
    public Student(){}

    //带所有成员变量的构造器
    public Student(String name, int age, String gender, String phone, String address, String email){
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.phone = phone;
        this.address = address;
        this.email = email;
    }
    //吃
    public void eating(String food){
        out.println(name+"正在吃"+food);
    }
    //喝
    public void drinking(String drink){
        out.println(name+"正在喝"+drink);
    }
    //玩
    public void playing(String game){
        out.println(name+"正在玩"+game);
    }
    //睡
    public void sleeping(){
        out.println(name+"正在睡觉");
    }
    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public static void main(String[] args) {
        boolean isfind = false;
        Student[] students = new Student[]{new Student("张三",12,"男","123","月之酒店","123"),
                new Student("李四",21,"男","1234","月之酒店","1234"),
                new Student("赵五",31,"男","12347","月之酒店","12347")};
        out.println("请输入“姓名”、“邮箱”、“地址”来进行查询");
        Scanner scanner = new Scanner(in);
        String line = scanner.nextLine();
        out.println(line);
        for (var i = 0; i < students.length; i++){
            if (line.equals(students[i].name)||line.equals(students[i].email)||line.equals(students[i].address)){
                StringBuilder stringBuilder = new StringBuilder();
                stringBuilder.append("姓名：");
                stringBuilder.append(students[i].name);
                stringBuilder.append("\n姓别：");
                stringBuilder.append(students[i].gender);
                stringBuilder.append("\n电话：");
                stringBuilder.append(students[i].phone);
                stringBuilder.append("\n邮箱：");
                stringBuilder.append(students[i].email);
                stringBuilder.append("\n地址：");
                stringBuilder.append(students[i].address);
                out.println(stringBuilder.toString());
                isfind = true;
            }
        }
        if (!isfind){
            out.println("查询不到此用户！");
        }
    }
}

3、定义普通人、老师、班主任、学生、学校这些类，提供适当的成员变量、方法用于描述其内部数据和行为特征，并提供主类使之运行。要求有良好的封装性，将不同的类放在不同的包下面。

package five.schools;

import static java.lang.System.out;

public class Person {
    protected String name;
    protected int age;
    protected String gender;
    protected float height;
    protected float weight;
    protected String occopation;

    public Person(){}

    public Person(String name, String gender, float height, float weight, String occopation,int age) {
        this.name = name;
        this.gender = gender;
        this.height = height;
        this.weight = weight;
        this.occopation = occopation;
        this.age = age;
    }

    public void eating(String food){
        out.println(this.getName()+"正在吃"+food);
    }
    //喝
    public void drinking(String drink){
        out.println(this.getName()+"正在喝"+drink);
    }
    //玩
    public void playing(String game){
        out.println(this.getName()+"正在玩"+game);
    }
    //睡
    public void sleeping(){
        out.println(this.getName()+"正在睡觉");
    }

    public String getName() {
        return name;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public float getHeight() {
        return height;
    }

    public void setHeight(float height) {
        this.height = height;
    }

    public float getWeight() {
        return weight;
    }

    public void setWeight(float weight) {
        this.weight = weight;
    }

    public String getOccopation() {
        return occopation;
    }

    public void setOccopation(String occopation) {
        this.occopation = occopation;
    }
}

package five.schools;

import static java.lang.System.*;

public class School {
    private String name;
    private String address;
    private String level;

    public School(){}

    public School(String name, String address, String level) {
        this.name = name;
        this.address = address;
        this.level = level;
    }

    public void recruitingTeacher(String name){
        out.println("招募老师"+name);
    }
}

package five.schools.classes;

import static java.lang.System.*;
import five.schools.Person;

public class Headmaster extends Teacher{

    private String classId;

    public Headmaster(){};

    public Headmaster(String name, String gender, float height, float weight, String occopation, int age, String id, String curriculumName, String classId) {
        super(name, gender, height, weight, occopation, age, id, curriculumName);
        this.classId = classId;
    }

    public void talking(String studentName){
        out.println("班主任"+this.getName()+"跟学生"+studentName+"谈话");
    }

    public String getClassId() {
        return classId;
    }

    public void setClassId(String classId) {
        this.classId = classId;
    }
}

```java
package five.schools.classes;

import static java.lang.System.*;
import five.schools.Person;

public class Student extends Person {
    private String id;//学号
    private String classId;//班级

    public Student(){

    }

    public Student(String name, String gender, float height, float weight, String occopation,int age,String id, String classId){
        super(name, gender, height, weight, occopation,age);
        this.id = id;
        this.classId = classId;
    }
    //上课
    public void goToClass(String className){
        out.println(this.getName()+"去上"+className+"课");
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getClassId() {
        return classId;
    }

    public void setClassId(String classId) {
        this.classId = classId;
    }
}

package five.schools.classes;

import static java.lang.System.*;
import five.schools.Person;

public class Teacher extends Person {
    private String id;
    private String curriculumName;

    public Teacher(){};

    public Teacher(String name, String gender, float height, float weight, String occopation, int age, String id, String curriculumName) {
        super(name, gender, height, weight, occopation, age);
        this.id = id;
        this.curriculumName = curriculumName;
    }

    //教书
    public void teaching(String classId,String curriculumName){
        out.println(this.getName()+"在"+classId+"班上"+curriculumName+"课");
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getCurriculumName() {
        return curriculumName;
    }

    public void setCurriculumName(String curriculumName) {
        this.curriculumName = curriculumName;
    }
}

4、改写第一题程序利用组合实现复用

package five;

import static java.lang.System.out;

/**
 * 使用组合来复用Student类
 */
public class ReuseStudent {
    private Student student;

    public ReuseStudent(Student student){
        this.student = student;
    }

    //吃
    public void eating(String food){
        student.eating(food);
    }

    //喝
    public void drinking(String drink){
        out.println(student.getName()+"正在喝"+drink);
    }
    //玩
    public void playing(String game){
        out.println(student.getName()+"正在玩"+game);
    }
    //睡
    public void sleeping(){
        out.println(student.getName()+"正在睡觉");
    }

    public static void main(String[] args) {
        var stu1 = new Student("张三",12,"男","123","月之酒店","123");
        ReuseStudent reuseStudent = new ReuseStudent(stu1);
        reuseStudent.drinking("美年达");
    }
}