韩老师本章课程链接：https://www.bilibili.com/video/BV1fh411y7R8?p=343&spm_id_from=pageDriver
代码
代码
代码
第一题
代码
package com.quange.homework;
public class Homework01 {
public static void main(String[] args) {
Person[] people = new Person[4];
people[0] = new Person("jack", 50, "java工程师");
people[1] = new Person("tom", 20, "php工程师");
people[2] = new Person("mary", 30, "大数据工程师");
people[3] = new Person("change", 60, "c工程师");
// 输出当前数组对象
for (int i = 0; i < people.length; i++) {
System.out.println(people[i]);
}
// 使用冒泡排序，按照年龄从大到小排序
Person tmp = null; // 临时变量 用于交换
boolean flag = true; // 标志是否完成排序，默认完成
for (int i = 0; i < people.length -1; i++) {
for (int j = 0; j < people.length -1 -i; j++) {
if (people[j].getAge() < people[j+1].getAge()){
flag = false;
tmp = people[j];
people[j] = people[j+1];
people[j+1] = tmp;
}
}
if (flag){
break;
}else {
flag = true; // 重置flag ,进行下次判断
}
}
System.out.println("=================排序后==============");
// 输出当前数组对象
for (int i = 0; i < people.length; i++) {
System.out.println(people[i]);
}
}
public static class Person{
private String name;
private int age;
private String job;
public Person(String name, int age, String job) {
this.name = name;
this.age = age;
this.job = job;
}
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 getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
", age=" + age +
", job='" + job + '\'' +
'}';
}
}
}
输出
Person{name='jack', age=50, job='java工程师'}
Person{name='tom', age=20, job='php工程师'}
Person{name='mary', age=30, job='大数据工程师'}
Person{name='change', age=60, job='c工程师'}
=================排序后==============
Person{name='change', age=60, job='c工程师'}
Person{name='jack', age=50, job='java工程师'}
Person{name='mary', age=30, job='大数据工程师'}
Person{name='tom', age=20, job='php工程师'}
进程已结束,退出代码0
第二题
第三题
代码
package com.quange.homework;
public class Homework03 {
public static void main(String[] args) {
Teacher teacher = new Teacher("quange", 40, "高级职称", 3000, 1.3);
teacher.introduce();
}
// 父类 老师类
static class Teacher{
private String name;
private int age;
private String post;
private double salary;
private double grade;
public Teacher(String name, int age, String post, double salary, double grade) {
this.name = name;
this.age = age;
this.post = post;
this.salary = salary;
this.grade = grade;
}
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 getPost() {
return post;
}
public void setPost(String post) {
this.post = post;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public double getGrade() {
return grade;
}
public void setGrade(double grade) {
this.grade = grade;
}
public void introduce(){
System.out.println("姓名：" + name + "年龄：" + age+ "职称：" + post + "基本工资：" + salary + " 职级：" + grade);
}
}
// 子类教授类
class Professor extends Teacher{
public Professor(String name, int age, String post, double salary, double grade) {
super(name, age, post, salary, grade);
}
// 重写父类的 introduce 方法
@Override
public void introduce() {
super.introduce();
}
}
}
输出
姓名：quange年龄：40职称：高级职称基本工资：3000.0 职级：1.3 进程已结束,退出代码0
第四题
代码
package com.quange.homework;
public class Homework04 {
public static void main(String[] args) {
Manager manager = new Manager("tom", 100, 20, 1.2);
// 设置经理的奖金
manager.setBonus(1000);
// 打印经理工资情况
manager.wages();
Ordinary change = new Ordinary("change", 90, 25, 1.0);
// 打印员工工资情况
change.wages();
}
// 父类 员工
static class Staff{
private String name; // 姓名
private double daily_wage; // 单日工资
private int work_days; // 工作天数
private double grade; // 职级
public Staff(String name, double daily_wage, int work_days, double grade) {
this.name = name;
this.daily_wage = daily_wage;
this.work_days = work_days;
this.grade = grade;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getDaily_wage() {
return daily_wage;
}
public void setDaily_wage(double daily_wage) {
this.daily_wage = daily_wage;
}
public int getWork_days() {
return work_days;
}
public void setWork_days(int work_days) {
this.work_days = work_days;
}
public double getGrade() {
return grade;
}
public void setGrade(double grade) {
this.grade = grade;
}
// 打印工资方法
public void wages(){
System.out.println("员工："+ name + "工资为：" + (daily_wage * work_days * grade));
}
}
// 子类 部门经理
static class Manager extends Staff{
private double bonus;
public Manager(String name, double daily_wage, int work_days, double grade) {
super(name, daily_wage, work_days, grade);
}
public double getBonus() {
return bonus;
}
public void setBonus(double bonus) {
this.bonus = bonus;
}
@Override
public void wages() {
System.out.println("经理：" + getName() + "工资为：" + ((getDaily_wage() * getWork_days() * getGrade() )+ bonus));
}
}
// 子类 普通员工
static class Ordinary extends Staff{
public Ordinary(String name, double daily_wage, int work_days, double grade) {
super(name, daily_wage, work_days, grade);
}
@Override
public void wages() {
super.wages();
}
}
}
输出
经理：tom工资为：3400.0 员工：change工资为：2250.0 进程已结束,退出代码0
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