用Java设计一个学生类，学生信息有身份证号，学号，专业，姓名，性别，年龄及数学，英语，Java程序设计三门课程的成绩，创建学生类的对象并输出对象信息

以下是一个简单的Java学生类的示例代码：

public class Student {
    private String id; // 身份证号
    private String studentNo; // 学号
    private String major; // 专业
    private String name; // 姓名
    private String gender; // 性别
    private int age; // 年龄
    private double mathScore; // 数学成绩
    private double englishScore; // 英语成绩
    private double javaScore; // Java程序设计成绩
    
    // 构造方法
    public Student(String id, String studentNo, String major, String name, String gender, int age, double mathScore, double englishScore, double javaScore) {
        this.id = id;
        this.studentNo = studentNo;
        this.major = major;
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.mathScore = mathScore;
        this.englishScore = englishScore;
        this.javaScore = javaScore;
    }
    
    // getter和setter方法
    public String getId() {
        return id;
    }
    
    public void setId(String id) {
        this.id = id;
    }
    
    public String getStudentNo() {
        return studentNo;
    }
    
    public void setStudentNo(String studentNo) {
        this.studentNo = studentNo;
    }
    
    public String getMajor() {
        return major;
    }
    
    public void setMajor(String major) {
        this.major = major;
    }
    
    public String getName() {
        return name;
    }
    
    public void setName(String name) {
        this.name = name;
    }
    
    public String getGender() {
        return gender;
    }
    
    public void setGender(String gender) {
        this.gender = gender;
    }
    
    public int getAge() {
        return age;
    }
    
    public void setAge(int age) {
        this.age = age;
    }
    
    public double getMathScore() {
        return mathScore;
    }
    
    public void setMathScore(double mathScore) {
        this.mathScore = mathScore;
    }
    
    public double getEnglishScore() {
        return englishScore;
    }
    
    public void setEnglishScore(double englishScore) {
        this.englishScore = englishScore;
    }
    
    public double getJavaScore() {
        return javaScore;
    }
    
    public void setJavaScore(double javaScore) {
        this.javaScore = javaScore;
    }
    
    // 输出对象信息
    @Override
    public String toString() {
        return "Student{" +
                "id='" + id + '\'' +
                ", studentNo='" + studentNo + '\'' +
                ", major='" + major + '\'' +
                ", name='" + name + '\'' +
                ", gender='" + gender + '\'' +
                ", age=" + age +
                ", mathScore=" + mathScore +
                ", englishScore=" + englishScore +
                ", javaScore=" + javaScore +
                '}';
    }
}

创建学生类的对象并输出对象信息的示例代码如下：

public class Main {
    public static void main(String[] args) {
        Student student = new Student("123456789012345678", "20210001", "计算机科学与技术", "张三", "男", 20, 80, 90, 85);
        System.out.println(student);
    }
}

输出结果如下：

Student{id='123456789012345678', studentNo='20210001', major='计算机科学与技术', name='张三', gender='男', age=20, mathScore=80.0, englishScore=90.0, javaScore=85.0}