Create a list of students by reading from student_hobbies.txt and display the list.You will also need to create a Student class, which has at leasttwo data fields: student name and an ArrayList of hobbies (String-type).and create readFile（）

Sure, I can help you with that. Here's the code to create the Student class:

import java.util.ArrayList;

public class Student {
    private String name;
    private ArrayList<String> hobbies;

    public Student(String name, ArrayList<String> hobbies) {
        this.name = name;
        this.hobbies = hobbies;
    }

    public String getName() {
        return name;
    }

    public ArrayList<String> getHobbies() {
        return hobbies;
    }
}

And here's the code for the `readFile()` method, which reads from the `student_hobbies.txt` file and returns a list of `Student` objects:

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        ArrayList<Student> students = readFile("student_hobbies.txt");
        // Display the list of students
        for (Student s : students) {
            System.out.println(s.getName() + ": " + s.getHobbies());
        }
    }

    public static ArrayList<Student> readFile(String filename) {
        ArrayList<Student> students = new ArrayList<>();
        try (BufferedReader br = new BufferedReader(new FileReader(filename))) {
            String line;
            while ((line = br.readLine()) != null) {
                String[] parts = line.split(":");
                String name = parts[0];
                String[] hobbies = parts[1].split(",");
                ArrayList<String> hobbyList = new ArrayList<>();
                for (String h : hobbies) {
                    hobbyList.add(h.trim());
                }
                Student s = new Student(name, hobbyList);
                students.add(s);
            }
        } catch (IOException e) {
            System.err.println("Error reading file: " + e.getMessage());
        }
        return students;
    }
}

This code assumes that the `student_hobbies.txt` file has lines in the format `name:hobby1, hobby2, ...`. It reads each line, splits it into the name and list of hobbies, creates a new `Student` object with those values, and adds it to the list of students. Finally, it displays the list of students and their hobbies.