本文实例为大家分享了java实现学生学籍管理系统的具体代码,供大家参考,具体内容如下
关键技术:循环,switch条件判断,创建对象,ArrayList()动态数组或集合,private
系统功能:
1、添加学生 (学号,姓名,年龄,居住地)以学号为基准进行遍历,如果学号已存在,则重新输入
2、修改学生 同样以学号为判断依据,输入要修改的学生学号,依次重新输入姓名,年龄,居住地,如果学号输入错误,则提示重新输入
3、删除学生 以学号为基准进行判断,学号不存在则进行提示;学号存在,则删除改学号所包含的全部信息
4、查看全部学生信息,采用循环遍历
5、退出程序 如果不选择,则程序回到主页面
创建学生类
package student_status_management_system;
public class Student {
private String student_number;
private String name;
private String age;
private String address;
public Student() {
}
public Student(String student_number, String name, String age, String address) {
this.student_number = student_number;
this.name = name;
this.age = age;
this.address = address;
}
public String getStudent_number() {
return student_number;
}
public void setStudent_number(String student_number) {
this.student_number = student_number;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
学生学号重复问题
public static boolean repetition(ArrayList<Student>array,String studentnumber){
boolean flag = false;
for (int i = 0;i<array.size();i++){
Student s = array.get(i);
if (s.getStudent_number().equals(studentnumber)){
flag = true;
break;
}
}
return flag;
}
添加学生
public static void addStudent(ArrayList<Student> array) {
String studentnumber;
Scanner sc = new Scanner(System.in);
while (true) {
System.out.println("请输入学生学号:");
studentnumber = sc.nextLine();
boolean flag = repetition(array, studentnumber);
if (flag) {
System.out.println("该学号已存在!请重新输入!");
}
else {
break;
}
}
System.out.println("请输入学生姓名:");
String name = sc.nextLine();
System.out.println("请输入学生年龄:");
String age = sc.nextLine();
System.out.println("请输入学生居住地:");
String address = sc.nextLine();
//创建学生对象,把键盘录入的学生信息赋值给学生对象的成员变量
Student s = new Student();
s.setStudent_number(studentnumber);
s.setName(name);
s.setAge(age);
s.setAddress(address);
//将信息添加到集合
array.add(s);
System.out.println("添加成功!");
}
修改学生信息
public static void updateStudent(ArrayList<Student> array) {
int index = -1;
Scanner sc = new Scanner(System.in);
System.out.println("请输入你要修改的学生的学号:");
String id = sc.nextLine();
for (int i = 0; i < array.size(); i++) {
Student student = array.get(i);
if (student.getStudent_number().equals(id)) {
index = i;
break;
}
}
if (index == -1) {
System.out.println("该学号不存在!");
} else {
System.out.println("请输入新的学生姓名:");
String name = sc.nextLine();
System.out.println("请输入新的学生年龄:");
String age = sc.nextLine();
System.out.println("请输入新的学生居住地:");
String address = sc.nextLine();
Student s = new Student();
s.setStudent_number(id);
s.setName(name);
s.setAge(age);
s.setAddress(address);
array.set(index, s);
System.out.println("修改成功!");
}
}
删除学生
public static void deleteStudent(ArrayList<Student> array) {
int index = -1; //定义索引
Scanner sc = new Scanner(System.in);
System.out.println("请输入你要删除的学生的学号:");
String id = sc.nextLine();
for (int i = 0; i < array.size(); i++) {
Student s = array.get(i);
if (s.getStudent_number().equals(id)) {
index = i;
break;
}
}
if (index == -1) {
System.out.println("该学号不存在!");
} else {
array.remove(index);
System.out.println("删除成功!");
}
}
查看所有学生
public static void findAllStudent(ArrayList<Student> array) {
//显示表头
if (array.size() == 0) {
System.out.println("你还没有输入信息!");
return;//阻止程序往下执行
}
System.out.println("学号\t\t\t\t姓名\t\t年龄\t\t\t居住地");
for (int i = 0; i < array.size(); i++) {
Student s = array.get(i);
System.out.println(s.getStudent_number() + "\t\t" + s.getName() + "\t\t" + s.getAge() + "岁" + "\t\t" + s.getAddress());
}
}
main方法
public static void main(String[] args) {
//创建集合,储存学生信息
ArrayList<Student> array = new ArrayList<>();
while (true) {
System.out.println("——————欢迎来到学生学籍管理系统——————");
System.out.println("1 添加学生");
System.out.println("2 修改学生");
System.out.println("3 删除学生");
System.out.println("4 查看所有学生");
System.out.println("5 退出系统");
//主界面
Scanner sc = new Scanner(System.in);
System.out.println("请输入你要进行的操作(数字序号):");
String line = sc.nextLine();
switch (line) {
case "1":
addStudent(array);
break;
case "2":
updateStudent(array);
break;
case "3":
deleteStudent(array);
break;
case "4":
findAllStudent(array);
break;
case "5":
System.out.println("再见!");
System.exit(0);//JVM退出
}
}
}
效果演示
添加学生
修改学生
删除学生
退出程序
没有添加学生信息时查看学生