标签：package 完成 功能 switch equals class show 导出 repeat
今天完成了一个小测试
是一个十分简单的学生信息管理系统
他的存储结构十分简单
而且没有文件的导入和导出功能
所以就花了点时间完成了该程序
在此附上代码
package a20200731;
public class Student {
private String name;
private String stunumber;
private int age;
private int sex;
private double score;
public String getStunumber() {
return stunumber;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public void setStunumber(String no) {
this.stunumber = no;
}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
Student() {
this.stunumber="0";
this.name="无名氏";
this.age=0;
this.sex=1;
this.score=0;
System.out.print("Constructor run\n");
}
Student(String no,String name, int age,int sex,double S) {
this.name = name;
this.stunumber=no;
this.sex=sex;
this.score=S;
this.age = age;
System.out.print("Constructor run\n");
}
public void setSex(int sex) {
this.sex=sex;
}
public int getSex() {
return this.sex;
}
public void setScore(double s) {
this.score=s;
}
public double getScore() {
return this.score;
}
public void show() {
System.out.print("stunumber="+this.stunumber+",name="+this.name+",sex="+this.sex+",age="+this.age+",score="+this.score+"\n");
}
}
package a20200731;
import java.util.Scanner;
import a20200731.Student;
public class main{
public Student[] s =new Student[5];
public void showStudent() {
for(int i=0;i<5;i++) {
if(!s[i].getStunumber().equals(null)) {
s[i].show();
}
}
}
public void addStudent(String stu,String n,int a,int sex,double S) {
int i;
int j;
for(j=0;j<5;j++) {
if(this.s[j].getStunumber().equals(stu)) {
System.out.print("Repeat of user name\n");
break;
}
}
for(i=0;i<5;i++) {
if(s[i].getStunumber().equals(null)) {
s[i].setAge(a);
s[i].setName(n);
s[i].setScore(S);
s[i].setSex(sex);
s[i].setStunumber(stu);
break;
}
}
if(i==5) {
System.out.print("User full!\n");
}
}
public void deleteStudent(String stu) {
int i;
for(i=0;i<5;i++) {
if(s[i].getStunumber().equals(stu)) {
s[i]=null;
break;
}
}
if(i==5) {
System.out.print("User name falue!\n");
}
}
public void updateStudent(String stu,String n,int a,int sex,double score) {
int i;
for(i=0;i<5;i++) {
if(s[i].getStunumber().equals(stu)) {
s[i].setAge(a);
s[i].setName(n);
s[i].setScore(score);
s[i].setSex(sex);
s[i].setStunumber(stu);
break;
}
}
if(i==5) {
System.out.print("User name falue\n");
}
}
public void selectStudent(String stu) {
int i;
for(i=0;i<5;i++) {
if(s[i].getStunumber().equals(stu)) {
s[i].show();
break;
}
}
if(i==5) {
System.out.print("User name falue\n");
}
}
public static void mune(){
System.out.print("*******************************************\n\n");
System.out.print(" \n");
System.out.print(" 学生信息管理系统 v2.0 \n");
System.out.print("*******************************************\n\n");
System.out.print(" 1·遍历输出学生信息； \n");
System.out.print(" 2·新学生信息录入； \n");
System.out.print(" 3·删除学生信息； \n");
System.out.print(" 4·修改学生信息； \n");
System.out.print(" 5·查询学生信息； \n\n");
System.out.print("********************************************");
}
}
package a20200731;
import java.util.Scanner;
import a20200731.Student;
import java.util.Scanner;
public class maina {
public static void main(String[] arg) {
main x = new main();
int b;
x.s[0] = new Student();
x.s[1] = new Student();
x.s[2] = new Student();
x.s[3] = new Student();
x.s[4] = new Student();
x.mune();
Scanner a =new Scanner(System.in);
b=a.nextInt();
a:
for(;;) {
if(b==6) break a;
switch(b){
case 1:
x.showStudent();
x.mune();
Scanner a1 =new Scanner(System.in);
b=a1.nextInt();
break;
case 2:
System.out.print("请输入学号：");
Scanner stu = new Scanner(System.in);
System.out.print("请输入姓名：");
Scanner n = new Scanner(System.in);
System.out.print("请输入年龄：");
Scanner age = new Scanner(System.in);
System.out.print("请输入性别：");
Scanner sex = new Scanner(System.in);
System.out.print("请输入分数：");
Scanner S = new Scanner(System.in);
String stu1 = new String();
String n1 = new String();
int age1;
double S1;
int sex1;
stu1=stu.next();
n1=n.next();
age1=age.nextInt();
sex1=sex.nextInt();
S1=S.nextDouble();
x.addStudent(stu1,n1,age1,sex1,S1);
x.mune();
Scanner a2 =new Scanner(System.in);
b=a2.nextInt();
break;
case 3:
System.out.print("请输入学号：");
Scanner stu2 = new Scanner(System.in);
String stu3 = new String();
stu3 = stu2.next();
x.deleteStudent(stu3);
x.mune();
Scanner a3 =new Scanner(System.in);
b=a3.nextInt();
break;
case 4:
System.out.print("请输入学号：");
Scanner stu4 = new Scanner(System.in);
System.out.print("请输入姓名：");
Scanner n4 = new Scanner(System.in);
System.out.print("请输入年龄：");
Scanner age4 = new Scanner(System.in);
System.out.print("请输入性别：");
Scanner sex4 = new Scanner(System.in);
System.out.print("请输入分数：");
Scanner S4 = new Scanner(System.in);
String stu5 = new String();
String n5 = new String();
int age5;
double S5;
int sex5;
stu5=stu4.next();
n5=n4.next();
age5=age4.nextInt();
S5=S4.nextDouble();
sex5=sex4.nextInt();
x.updateStudent(stu5, n5, age5, sex5, S5);
x.mune();
Scanner a4 =new Scanner(System.in);
b=a4.nextInt();
break;
case 5:
System.out.print("请输入学号：");
Scanner stu6 = new Scanner(System.in);
String stu7 = new String();
stu7 = stu6.next();
x.selectStudent(stu7);
x.mune();
Scanner a5 =new Scanner(System.in);
b=a5.nextInt();
break;
}
}
}
}
20200731 千锤百炼软工人第二十六天
标签：package 完成 功能 switch equals class show 导出 repeat
原文地址：https://www.cnblogs.com/huangmouren233/p/13411948.html
