用Java设计一个教师类，教师信息有身份证号，教师号，专业，姓名，性别，年龄，及授课的学时数。创建教师类的对象并输出对象的信息。

以下是用Java设计的教师类：

public class Teacher {
    private String idCardNo; // 身份证号
    private String teacherNo; // 教师号
    private String major; // 专业
    private String name; // 姓名
    private String gender; // 性别
    private int age; // 年龄
    private int teachingHours; // 授课的学时数

    public Teacher(String idCardNo, String teacherNo, String major, String name, String gender, int age, int teachingHours) {
        this.idCardNo = idCardNo;
        this.teacherNo = teacherNo;
        this.major = major;
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.teachingHours = teachingHours;
    }

    public String getIdCardNo() {
        return idCardNo;
    }

    public String getTeacherNo() {
        return teacherNo;
    }

    public String getMajor() {
        return major;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public int getAge() {
        return age;
    }

    public int getTeachingHours() {
        return teachingHours;
    }

    public void setIdCardNo(String idCardNo) {
        this.idCardNo = idCardNo;
    }

    public void setTeacherNo(String teacherNo) {
        this.teacherNo = teacherNo;
    }

    public void setMajor(String major) {
        this.major = major;
    }

    public void setName(String name) {
        this.name = name;
    }

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

    public void setAge(int age) {
        this.age = age;
    }

    public void setTeachingHours(int teachingHours) {
        this.teachingHours = teachingHours;
    }

    @Override
    public String toString() {
        return "Teacher{" +
                "idCardNo='" + idCardNo + '\'' +
                ", teacherNo='" + teacherNo + '\'' +
                ", major='" + major + '\'' +
                ", name='" + name + '\'' +
                ", gender='" + gender + '\'' +
                ", age=" + age +
                ", teachingHours=" + teachingHours +
                '}';
    }
}

以下是创建教师类的对象并输出对象的信息的示例代码：

public class Main {
    public static void main(String[] args) {
        Teacher teacher = new Teacher("1234567890", "T001", "计算机科学与技术", "张三", "男", 30, 40);
        System.out.println(teacher.toString());
    }
}

输出结果：

Teacher{idCardNo='1234567890', teacherNo='T001', major='计算机科学与技术', name='张三', gender='男', age=30, teachingHours=40}