用java写的学生信息管理系统（基础，入门）

港控/mmm° 2023-10-18 14:14 42阅读 0赞

## 用java写的学生信息管理系统 ##

使用到了集合类ArrayLisat 来对Student类的对象进行存储。

StudentManagerTest为主类，Student类里面进行了相应数据的封装。里面用了很多循环来写，并且运用了很多标记来进行判断是否退出循环，如flag和index。

创建集合类对象格式：  
ArrayList array= new ArrayList();在传递方法的时候需要在形参列表中用<>对传递的类型进行明确

**主类**

package zjh;
    		import java.util.ArrayList;
    		import java.util.Scanner;
    		
    		public class StudentManageTest {
        
    		public static void main(String[] args) {
        
    		ArrayList<Student> array = new ArrayList<Student>();
    	
    		while(true) {
        
    		System.out.println("----欢迎来到学生信息管理系统----");
    		System.out.println("请输入你想要进行的操作");
    		System.out.println("1:查看所有学生信息");
    		System.out.println("2:添加学生信息");
    		System.out.println("3:删除学生信息");
    		System.out.println("4:修改学生信息");
    		System.out.println("5:退出");
    		
    		Scanner scanner = new Scanner(System.in);
    		
    		String choice = scanner.nextLine();
    		
    
    
    		switch (choice) {
        
    		case "1":
    			findAllStudents(array);
    			break;
    		case "2":
    			addStudent(array);
    			break;
    		case "3":
    			deleteStudent(array);
    			break;
    		case "4":
    			updateStudent(array);
    			break;
    		case "5":
    		default:
    			System.out.println("正在退出系统，欢迎下次继续使用");
    			break;
    		}
    		
    	}
    	}
    	//修改学生信息
    	public static void updateStudent(ArrayList<Student> array) {
        
    		Scanner scanner = new Scanner(System.in);
    		while(true) {
        
    		System.out.println("请输入你要修改的学号：");
    		String id = scanner.nextLine();
    		int index = -1;
    		for(int x=0; x<array.size(); x++) {
        
    			Student student = array.get(x);
    			if(student.getId().equals(id)) {
        
    				index = x;
    				break;
    			}
    		}
    		if(index ==-1) {
        
    			System.out.println("您输入的学号有误请重新输入");
    			continue;
    		}else {
        
    			System.out.println("请输入新的姓名：");
    			String name = scanner.nextLine();
    			System.out.println("请输入新的年龄：");
    			String age = scanner.nextLine();
    			System.out.println("请输入新的地址");
    			String address = scanner.nextLine();
    			
    			Student student = new Student();
    			student.setId(id);
    			student.setName(name);
    			student.setAge(age);
    			student.setAddress(address);
    			
    			array.set(index, student);
    			break;
    			}
    		}
    		System.out.println("修改学生成功");
    		
    	}
    	
    	//删除学生信息
    	public static void deleteStudent(ArrayList<Student> array) {
        
    		Scanner scanner = new Scanner(System.in);
    		while(true) {
        
    		System.out.println("请输入你要删除的学号");
    		
    		String id = scanner.nextLine();
    		int index = -1;
    		
    	    for(int x=0; x<array.size(); x++) {
        
    	    	Student student = array.get(x);
    	    	if (student.getId().equals(id)) {
        
    	    		index = x;
    	    		break;
    	    	}
    	    }
    	    if(index == -1) {
        
    	    	System.out.println("您输入的学号有误 请重新输入");
    	    	continue;
    	    }else {
        
    	    	array.remove(index);
    	    	break;
    	    }
    		}
    		System.out.println("删除学生信息成功！");
    	}
    	
    	//添加学生信息
    	public static void addStudent(ArrayList<Student> array) {
        
    		Scanner scanner = new Scanner(System.in);
    		String id;
    		while(true) {
        
    		System.out.println("请输入你要添加的学号:");
    		int flag =0;
    		id = scanner.nextLine();
    		for(int x=0; x<array.size(); x++) {
        
    			Student student =array.get(x);
    			if(student.getId().equals(id)) {
        
    				System.out.println("你输入的学号已被占用，请重新输入");
    				break;
    			}else {
        
    				flag++;
    			}
    			}
    		if(flag==array.size()) {
        
    			break;
    		}
    		}
    		System.out.println("请输入你要添加的姓名：");
    		String name = scanner.nextLine();
    		System.out.println("请输入你要添加的年龄：");
    		String age = scanner.nextLine();
    	    System.out.println("请输入你要添加的地址：");
    	    String address = scanner.nextLine();
    		Student student = new  Student();
    		student.setId(id);
    		student.setName(name);
    		student.setAge(age);
    		student.setAddress(address);
    		
    		array.add(student);
    		
    		
    		System.out.println("添加信息成功");
    		
    	}
    
    	
    	//查看所有学生信息
    	public static void findAllStudents(ArrayList<Student> array) {
        
    		if(array.size()==0) {
        
    			System.out.println("当前没有任何学生信息，请添加后再使用");
    		}
    		System.out.println("学号\t\t姓名\t年龄\t居住地");
    		for(int x=0; x<array.size(); x++) {
        
    			Student s = array.get(x);
    			System.out.println(s.getId()+"\t"+s.getName()+"\t"+s.getAge()+"\t"+s.getAddress());
    		}
    	}
    }

**Student类**

package zjh;
    	public class Student {
        
    	private String id;
    	private String name;
    	private String age;
    	private String address;
    	public Student() {
        
    		
    	}
    	public Student(String id, String name, String age, String address) {
        
    		this.id = id;
    		this.name = name;
    		this.age = age;
    		this.address = address;
    	}
    	public String getId() {
        
    		return id;
    	}
    	public void setId(String id) {
        
    		this.id = id;
    	}
    	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;
    	}
    	}

接下来的是进行实际操作的一些样例展示  
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