JAVA 编写程序Student学号.java，定义一个表示学生的类Student,包括私有域：学号（studentId）、班号（classId）、姓名(studentName)；方法:获得学号、修改学号、获得姓名、修改姓名、获得年龄、修改年龄。

创建Student类的对象，并为相应属性赋值，并打印输出各属性值。

class Student{
        private long studentId;
        private int classId;
        private int age;
        private String studentName;

        public long getStudentId(){
            return studentId;
        }
        public void setStudentId(long studentId){
            this.studentId=studentId;
        }

        public int getClassId(){
            return classId;
        }
        public void setClassId(int classId){
            this.classId=classId;
        }

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

        public String getStudentName(){
            return studentName;
        }
        public void setStudentName(String studentName){
            this.studentName=studentName;
        }
        public void read(){
            System.out.println("大家好，我是"+studentName+",学号是"+studentId+",来自软工"+classId+"班,今年"+age+"岁,很高兴认识大家！");
        }
}
public class Student_Example1 {
    public static void main(String[] args){
        Student stu=new Student();
        stu.setStudentId(2088999977771L);
        stu.setClassId(02);
        stu.setAge(22);
        stu.setStudentName("张小明");
        stu.read();
    }
}