用java代码编写一个程序,在IDEA里面实现功能,要求设计一个学生student类,包含学号、姓名、出生日期、性别等字段 从src中的input.txt文件(内容:1001 张三 1998-01-18 男 1002 李四 1999-04-28 男 1003 王五 1998

好的，以下是Java代码实现：

import java.io.File;
import java.io.FileNotFoundException;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Student {
    private String id;
    private String name;
    private LocalDate birthdate;
    private String gender;

    public Student(String id, String name, LocalDate birthdate, String gender) {
        this.id = id;
        this.name = name;
        this.birthdate = birthdate;
        this.gender = gender;
    }

    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 LocalDate getBirthdate() {
        return birthdate;
    }

    public void setBirthdate(LocalDate birthdate) {
        this.birthdate = birthdate;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id='" + id + '\'' +
                ", name='" + name + '\'' +
                ", birthdate=" + birthdate +
                ", gender='" + gender + '\'' +
                '}';
    }

    public static void main(String[] args) {
        List<Student> students = new ArrayList<>();
        File inputFile = new File("src/input.txt");
        try {
            Scanner scanner = new Scanner(inputFile);
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                String[] parts = line.split(" ");
                String id = parts[0];
                String name = parts[1];
                LocalDate birthdate = LocalDate.parse(parts[2], formatter);
                String gender = parts[3];
                Student student = new Student(id, name, birthdate, gender);
                students.add(student);
            }
            scanner.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        for (Student student : students) {
            System.out.println(student);
        }
    }
}

这个程序会从`src`目录下的`input.txt`文件中读取学生信息，创建`Student`对象，并将所有学生对象存储在一个`List`中。然后遍历这个`List`，将所有学生信息输出到控制台。

你可以在IDEA中打开这个程序，运行它，并确保`src/input.txt`文件中包含了正确的学生信息。