abstract class Student {
    private String name;

    public String getName() {
        return name;
    }

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

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }

    private String no;
    public abstract void printlnfo();

    public Student() {
        no="20100701020xx";
        name="lx";
    }
    public void print() {
        System.out.println("name:" +this.getName());
        System.out.println("no:" +no);
    }
}

public class MaleStudent extends Student {
    private String gender;

    public MaleStudent(String gender) {
        super();
        this.gender=gender;
    }
    @Override
    public void printlnfo() {
        System.out.println("name:"+this.getName());
        System.out.println("no:+no");
        System.out.println("gender:+gender");
    }
    public static void main(String[] args) {
        MaleStudent m=new MaleStudent("man");
        m.printlnfo();
    }
}