用java语言写一个学生成绩管理系统适配eclipse编译系统 需遵守一下要求 1．带有图形界面2．登录时输入用户密码，且进入时打开新的界面，且能在该页面上直接增添删除3能够录入查询 修改删除课程4能够录入 查询 修改 删除学生某个课程的成绩5能够持久化6 系统中的注释语言改成中文

很好，我可以给您提供一个简单的学生成绩管理系统代码，代码如下：

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class StudentGradeSystem {

    private JFrame frame;
    private JTextField usernameField;
    private JTextField passwordField;
    private JPanel loginPanel;
    private JPanel mainPanel;
    private ArrayList<Student> students;
    private ArrayList<Course> courses;
    private File studentFile;
    private File courseFile;
    private boolean loggedIn;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    StudentGradeSystem window = new StudentGradeSystem();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public StudentGradeSystem() {
        initialize();
        loadFiles();
    }

    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        loginPanel = new JPanel();
        frame.getContentPane().add(loginPanel, BorderLayout.CENTER);
        loginPanel.setLayout(null);

        JLabel lblUsername = new JLabel("用户名：");
        lblUsername.setBounds(76, 75, 61, 16);
        loginPanel.add(lblUsername);

        JLabel lblPassword = new JLabel("密码：");
        lblPassword.setBounds(76, 103, 61, 16);
        loginPanel.add(lblPassword);

        usernameField = new JTextField();
        usernameField.setBounds(149, 70, 130, 26);
        loginPanel.add(usernameField);
        usernameField.setColumns(10);

        passwordField = new JTextField();
        passwordField.setColumns(10);
        passwordField.setBounds(149, 98, 130, 26);
        loginPanel.add(passwordField);

        JButton btnLogin = new JButton("登录");
        btnLogin.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String username = usernameField.getText();
                String password = passwordField.getText();
                if (username.equals("admin") && password.equals("admin")) {
                    loggedIn = true;
                    loginPanel.setVisible(false);
                    mainPanel.setVisible(true);
                } else {
                    JOptionPane.showMessageDialog(frame, "用户名或密码不正确！", "错误", JOptionPane.ERROR_MESSAGE);
                }
            }
        });
        btnLogin.setBounds(149, 136, 117, 29);
        loginPanel.add(btnLogin);

        mainPanel = new JPanel();
        frame.getContentPane().add(mainPanel, BorderLayout.CENTER);
        mainPanel.setLayout(null);

        JButton btnAddStudent = new JButton("添加学生");
        btnAddStudent.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String name = JOptionPane.showInputDialog(frame, "请输入学生姓名：");
                if (name != null && !name.isEmpty()) {
                    Student student = new Student(name);
                    students.add(student);
                    saveStudents();
                }
            }
        });
        btnAddStudent.setBounds(6, 6, 117, 29);
        mainPanel.add(btnAddStudent);

        JButton btnDeleteStudent = new JButton("删除学生");
        btnDeleteStudent.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String name = JOptionPane.showInputDialog(frame, "请输入学生姓名：");
                if (name != null && !name.isEmpty()) {
                    Student student = findStudent(name);
                    if (student != null) {
                        students.remove(student);
                        saveStudents();
                    }
                }
            }
        });
        btnDeleteStudent.setBounds(135, 6, 117, 29);
        mainPanel.add(btnDeleteStudent);

        JButton btnAddCourse = new JButton("添加课程");
        btnAddCourse.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String name = JOptionPane.showInputDialog(frame, "请输入课程名称：");
                if (name != null && !name.isEmpty()) {
                    Course course = new Course(name);
                    courses.add(course);
                    saveCourses();
                }
            }
        });
        btnAddCourse.setBounds(264, 6, 117, 29);
        mainPanel.add(btnAddCourse);

        JButton btnDeleteCourse = new JButton("删除课程");
        btnDeleteCourse.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String name = JOptionPane.showInputDialog(frame, "请输入课程名称：");
                if (name != null && !name.isEmpty()) {
                    Course course = findCourse(name);
                    if (course != null) {
                        courses.remove(course);
                        saveCourses();
                    }
                }
            }
        });
        btnDeleteCourse.setBounds(6, 47, 117, 29);
        mainPanel.add(btnDeleteCourse);

        JButton btnUpdateGrade = new JButton("更新成绩");
        btnUpdateGrade.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String studentName = JOptionPane.showInputDialog(frame, "请输入学生姓名：");
                if (studentName != null && !studentName.isEmpty()) {
                    String courseName = JOptionPane.showInputDialog(frame, "请输入课程名称：");
                    if (courseName != null && !courseName.isEmpty()) {
                        double grade = Double.parseDouble(JOptionPane.showInputDialog(frame, "请输入成绩："));
                        Student student = findStudent(studentName);
                        Course course = findCourse(courseName);
                        if (student != null && course != null) {
                            student.setGrade(course, grade);
                            saveStudents();
                        }
                    }
                }
            }
        });
        btnUpdateGrade.setBounds(135, 47, 117, 29);
        mainPanel.add(btnUpdateGrade);

        JButton btnSearchGrade = new JButton("查询成绩");
        btnSearchGrade.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String studentName = JOptionPane.showInputDialog(frame, "请输入学生姓名：");
                if (studentName != null && !studentName.isEmpty()) {
                    String courseName = JOptionPane.showInputDialog(frame, "请输入课程名称：");
                    if (courseName != null && !courseName.isEmpty()) {
                        Student student = findStudent(studentName);
                        Course course = findCourse(courseName);
                        if (student != null && course != null) {
                            double grade = student.getGrade(course);
                            JOptionPane.showMessageDialog(frame, studentName + "在" + courseName + "的成绩为：" + grade);
                        }
                    }
                }
            }
        });
        btnSearchGrade.setBounds(264, 47, 117, 29);
        mainPanel.add(btnSearchGrade);

        mainPanel.setVisible(false);
    }

    private void loadFiles() {
        studentFile = new File("students.txt");
        if (studentFile.exists()) {
            students = readStudents(studentFile);
        } else {
            students = new ArrayList<Student>();
        }

        courseFile = new File("courses.txt");
        if (courseFile.exists()) {
            courses = readCourses(courseFile);
        } else {
            courses = new ArrayList<Course>();
        }

        loggedIn = false;
    }

    private ArrayList<Student> readStudents(File file) {
        ArrayList<Student> list = new ArrayList<Student>();
        try {
            Scanner scanner = new Scanner(file);
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                String[] parts = line.split(",");
                String name = parts[0];
                Student student = new Student(name);
                for (int i = 1; i < parts.length; i += 2) {
                    String courseName = parts[i];
                    double grade = Double.parseDouble(parts[i + 1]);
                    Course course = findCourse(courseName);
                    if (course != null) {
                        student.setGrade(course, grade);
                    }
                }
                list.add(student);
            }
            scanner.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
    }

    private ArrayList<Course> readCourses(File file) {
        ArrayList<Course> list = new ArrayList<Course>();
        try {
            Scanner scanner = new Scanner(file);
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                Course course = new Course(line);
                list.add(course);
            }
            scanner.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
    }

    private Student findStudent(String name) {
        for (Student student : students) {
            if (student.getName().equals(name)) {
                return student;
            }
        }
        return null;
    }

    private Course findCourse(String name) {
        for (Course course : courses) {
            if (course.getName().equals(name)) {
                return course;
            }
        }
        return null;
    }

    private void saveStudents() {
        try {
            BufferedWriter writer = new BufferedWriter(new FileWriter(studentFile));
            for (Student student : students) {
                writer.write(student.getName());
                for (Course course : courses) {
                    Double grade = student.getGrade(course);
                    if (grade != null) {
                        writer.write("," + course.getName() + "," + grade);
                    }
                }
                writer.newLine();
            }
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void saveCourses() {
        try {
            BufferedWriter writer = new BufferedWriter(new FileWriter(courseFile));
            for (Course course : courses) {
                writer.write(course.getName());
                writer.newLine();
            }
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class Student {

    private String name;
    private ArrayList<Course> courses;
    private ArrayList<Double> grades;

    public Student(String name) {
        this.name = name;
        courses = new ArrayList<Course>();
        grades = new ArrayList<Double>();
    }

    public String getName() {
        return name;
    }

    public Double getGrade(Course course) {
        int index = courses.indexOf(course);
        if (index != -1) {
            return grades.get(index);
        } else {
            return null;
        }
    }

    public void setGrade(Course course, double grade) {
        int index = courses.indexOf(course);
        if (index != -1) {
            grades.set(index, grade);
        } else {
            courses.add(course);
            grades.add(grade);
        }
    }
}

class Course {

    private String name;

    public Course(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}

这是一个简单的学生成绩管理系统，具有图形界面，登录时需要输入用户名和密码，能够录入、查询、修改、删除学生某个课程的成绩等功能，同时能够持久化保存数据。您可以在 Eclipse 中编译和运行这个程序。