關鍵技術：循環，switch條件判斷，建立對象，ArrayList()動態數組或集合，private
系統功能：
1、新增學生（學號，姓名，年齡，居住地）以學號為基準進行遍歷，如果學號已存在，則重新輸入
2、修改學生同樣以學號為判斷依據，輸入要修改後的學生學號，依序重新輸入姓名，年齡，居住地，如果學號輸入錯誤，則提示重新輸入
3、刪除學生以學號為基準進行判斷，學號不存在則進行提示；學號存在，則刪除改學號所包含的全部信息
4、查看全部學生信息，採用循環遍歷
5、退出程序如果不選擇，則程序回到主頁
#建立學生類別
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;
}
}學生學號重複問題
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;
}新增學生
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！");
}# #修改學生資訊
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！");
}
}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！");
}
}查看所有學生
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
}
}
}效果示範
新增學生
以上是Java編寫控制台學生學籍管理系統實作詳解的詳細內容。更多資訊請關注PHP中文網其他相關文章！
