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的信息。

下面是一个简单的Java学生类的代码实现：

public class Student {
    private String idCard;      // 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 idCard, String studentNo, String major, String name, String gender, int age,
                   double mathScore, double englishScore, double javaScore) {
        this.idCard = idCard;
        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 getIdCard() {
        return idCard;
    }

    public void setIdCard(String idCard) {
        this.idCard = idCard;
    }

    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;
    }
    
    // 输出学生信息的方法
    public void printInfo() {
        System.out.println("姓名：" + this.name);
        System.out.println("身份证号：" + this.idCard);
        System.out.println("学号：" + this.studentNo);
        System.out.println("专业：" + this.major);
        System.out.println("性别：" + this.gender);
        System.out.println("年龄：" + this.age);
        System.out.println("数学成绩：" + this.mathScore);
        System.out.println("英语成绩：" + this.englishScore);
        System.out.println("Java程序设计成绩：" + this.javaScore);
    }
}

然后，我们可以在主函数中创建一个学生对象，设置学生的各项信息，并输出学生的信息：

public static void main(String[] args) {
    Student student = new Student("123456789012345678", "18010101", "计算机科学与技术", "张三", "男", 20, 85.5, 90.0, 95.0);
    student.printInfo();
}

输出结果如下：

姓名：张三
身份证号：123456789012345678
学号：18010101
专业：计算机科学与技术
性别：男
年龄：20
数学成绩：85.5
英语成绩：90.0
Java程序设计成绩：95.0