20200727 千锤百炼软工人第二十二天

今天完成了一个学生类和教师类其父类是一个人类

以下是实现的代码和截图

学生类代码

package a20200727;

import java.math.BigDecimal;

public class Student extends Person{
 private String sNo;
 private String className;
 private double score;
 Student(String sNo,String className,double score){
  this.sNo=sNo;
  this.className = className;
  this.score=score;
  System.out.print("Student Constructor run\n");
 }
 Student(){
  this.sNo=null;
  this.className=null;
  this.score=0.0;
  System.out.print("Student Constructor run\n");
 }
 Student(Student s){
  this.sNo=s.sNo;
  this.score=s.score;
  this.className=s.className;
  System.out.print("Student CopyConstructor run\n");
 }
 public void finalize() {
  System.out.print("Student Destructor run\n");
 }
 public void setSNo(String sNo) {
  this.sNo=sNo;
 }
 public void setClassName(String className) {
  this.className=className;
 }
 public void setScore(double score) {
  this.score=score;
 }
 public void setSNo() {
  this.sNo=null;
 }
 public void setClassName() {
  this.className=null;
 }
 public void setScore() {
  this.score=0.0;
 }
 public String getSNo() {
  return this.sNo;
 }
 public String getClassName() {
  return this.className;
 }
 public double getScore() {
  return this.score;
 }
 public void show() {
  BigDecimal s1 = new BigDecimal(this.score);
  double s2 = s1.setScale(0,BigDecimal.ROUND_HALF_UP).doubleValue();
  System.out.print("No="+this.getNo()+",Name="+this.getName()+"\n"+"SNo="+this.sNo+",ClassName="+this.className+",Score="+(int)s2+"\n");
 }
}教师类代码

package a20200727;

import java.math.BigDecimal;

public class Teacher extends Person{
 private String tNo;
 private String departmrntName;
 private double wages;
 Teacher(String t,String d,double w){
  this.tNo=t;
  this.departmrntName=d;
  this.wages=w;
  System.out.print("Teacher Constructor run\n");
 }
 Teacher(){
  this.tNo=null;
  this.departmrntName=null;
  this.wages=0.0;
  System.out.print("Teacher Constructor run\n");
 }
 Teacher(Teacher t){
  this.departmrntName=t.departmrntName;
  this.tNo=t.tNo;
  this.wages=t.wages;
  System.out.print("Teacher CopyConstructor run\n");
 }
 public void finalize() {
  System.out.print("Teacher Destructor run\n");
 }
 public void setTNo(String s) {
  this.tNo=s;
 }
 public void setTNo() {
  this.tNo=null;
 }
 public void setDepartmentName(String d) {
  this.departmrntName=d;
 }
 public void setDepartmentName() {
  this.departmrntName=null;
 }
 public void setWages(double w) {
  this.wages=w;
 }
 public void setWages() {
  this.wages=0.0;
 }
 public String getTNo() {
  return this.tNo;
 }
 public String getDepartmentName() {
  return this.departmrntName;
 }
 public double getWages() {
  return this.wages;
 }
 public void show() {
  BigDecimal s1 = new BigDecimal(this.wages);
  double s2 = s1.setScale(0,BigDecimal.ROUND_HALF_UP).doubleValue();
  System.out.print("No="+this.getNo()+",Name="+this.getName()+"\nTNo="+this.tNo+",DepartmentName="+this.departmrntName+",Wages="+(int)s2+"\n");
 }
}

人类代码

package a20200727;

public class Person {
 private String no;
 private String name;
 Person(String no,String name){
  this.no=no;
  this.name=name;
  System.out.print("Person Constructor run\n");
 }
 Person(){
  this.no=null;
  this.name=null;
  System.out.print("Person Constructor run\n");
 }
 Person(Person p){
  this.no=p.no;
  this.name=p.name;
  System.out.print("Person CopyConstructor run\n");
 }
 public void finalize() {
  System.out.print("Person Destructor run\n");
 }
 public void setNo(String no) {
  this.no=no;
 }
 public void setName(String name) {
  this.name=name;
 }
 public String getNo() {
  return this.no;
 }
 public String getName() {
  return this.name;
 }
 public void setNo() {
  this.no=null;
 }
 public void setName() {
  this.name=null;
 }
 public void show() {
  System.out.print("No="+this.no+",Name="+this.name+"\n");
  
 }
}

主函数代码

package a20200727;

import java.util.Scanner;

public class main {
 public static void main(String[] arg) {
  String s1="130502190001010332";
  String s2="doublebest";
  String s3="20181234";
  String s4="铁 1801";
  double value=60.67;
  Student stu1=new Student(s3,s4,value);
  stu1.setName(s2);
  stu1.setNo(s1);
  stu1.show();
  Student stu2 = new Student(stu1);
  stu2.setName(s2);
  stu2.setNo(s1);
  Scanner S3 = new Scanner(System.in);
  Scanner S4 = new Scanner(System.in);
  Scanner v = new Scanner(System.in);
  s3 = S3.next();
  s4 = S4.next();
  value = v.nextDouble();
  stu2.setSNo(s3);
  stu2.setClassName(s4);
  stu2.show();
  Teacher t1 = new Teacher(s3,s4,value);
  t1.setName(s2);
  t1.setNo(s1);
  t1.show();
  Teacher t2 = new Teacher(t1);
  t2.setName(s2);
  t2.setNo(s1);
  t2.setTNo(s3);
  t2.setDepartmentName(s3);
  t2.show();
  stu1=null;
  stu2=null;
  t1=null;
  t2=null;
  System.gc();
 }
}截图如下