2024/9/20日工作日志

Java第二次测试代码：

public class Student {
String stunumber;
String name;
int age;
boolean sex;
double score;

public Student(String stunumber, String name, int age, boolean sex, double score) {this.stunumber = stunumber;this.name = name;this.age = age;this.sex = sex;this.score = score;
}
public char isFM() {if (sex)return 'M';elsereturn 'F';
}
public String getStunumber() {return stunumber;
}public String getName() {return name;
}public int getAge() {return age;
}public boolean isSex() {return sex;
}public double getScore() {return score;
}public void setStunumber(String stunumber) {this.stunumber = stunumber;
}public void setName(String name) {this.name = name;
}public void setAge(int age) {this.age = age;
}public void setSex(boolean sex) {this.sex = sex;
}public void setScore(double score) {this.score = score;
}

}
import java.util.Objects;

public class StudentManager {
private Student[] students;
public int index;

public StudentManager(){students=new Student[10];index=0;
}
public void showStudent(){for(int i=0;i<index;i++) {System.out.println(students[i].getStunumber()+"\t"+students[i].getName()+"\t"+students[i].getAge()+"\t"+students[i].isFM()+"\t"+students[i].getScore());}
}
public void addStudent(String stunumber,String name,int age,boolean sex,double score){for(int i=0;i<index;i++){if(Objects.equals(stunumber, students[i].getStunumber())){System.out.println("学号重复，请重新选择！");return;}}students[index]=new Student(stunumber,name,age,sex,score);index++;
}
public void deleteStudent(String stunumber){int flag=0;for(int i=0;i<index;i++){if(Objects.equals(stunumber, students[i].getStunumber())){flag=1;for(int j=i;j<index;j++){if(j<index-1){students[j].setStunumber(students[j+1].getStunumber());students[j].setName(students[j=1].getName());students[j].setSex(students[j+1].isSex());students[j].setAge(students[j+1].getAge());students[j].setScore(students[j+1].getScore());}else if(j==index-1){students[j].setStunumber(null);students[j].setName(null);students[j].setSex(true);students[j].setAge(0);students[j].setScore(0);}}index--;}}if(flag==0)System.out.println("学号不存在，请重新选择！");
}
public void updateStudent(String stunumber,String name,int age,boolean sex,double score){int flag=0;for(int i=0;i<index;i++){if(Objects.equals(stunumber, students[i].getStunumber())){students[i].setStunumber(stunumber);students[i].setName(name);students[i].setAge(age);students[i].setSex(sex);students[i].setScore(score);flag=1;}}if(flag==0)System.out.println("学号不存在，请重新选择！");
}
public void selectStudent(String stunumber){int flag=0;for(int i=0;i<index;i++){if(Objects.equals(stunumber, students[i].getStunumber())){flag=1;System.out.println(students[i].getStunumber()+"\t"+students[i].getName()+"\t"+students[i].getAge()+"\t"+students[i].isFM()+"\t"+students[i].getScore());}}if(flag==0)System.out.println("学号不存在，请重新选择！");
}
public void menu(){System.out.println("***************************************************************");System.out.println("石家庄铁道大学软件工程系学生信息管理系统");System.out.println("***************************************************************");System.out.println("1、\t遍历输出学生信息:");System.out.println("2、\t新学生信息录入:");System.out.println("3、\t删除学生信息:");System.out.println("4、\t修改学生信息:");System.out.println("5、\t查询学生信息:");System.out.println("***************************************************************");System.out.println("请选择：");}

}
import java.util.Scanner;

public class test {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
String stunumber;String name;int age;boolean sex;double score;
StudentManager manager=new StudentManager();
while (true){
int choice;
manager.menu();
choice=sc.nextInt();
switch (choice){
case 1:
manager.showStudent();
break;
case 2:
stunumber=sc.next();
name=sc.next();
age=sc.nextInt();
sex=sc.nextBoolean();
score=sc.nextDouble();
manager.addStudent(stunumber,name,age,sex,score);
break;
case 3:
stunumber=sc.next();
manager.deleteStudent(stunumber);
break;
case 4:
stunumber=sc.next();
name=sc.next();
age=sc.nextInt();
sex=sc.nextBoolean();
score=sc.nextDouble();
manager.updateStudent(stunumber,name,age,sex,score);
break;
case 5:
stunumber=sc.next();
manager.selectStudent(stunumber);
break;
default:
return;
}
}
}
}