package chap05;

class  Student{
	String num;
	String name;
	char sex;
	int age;
	Student(){
		super();
	}
	Student(String n){
		name = n;
    }
	Student(String no,String n){
		num = no;
		name = n;
	}
	Student(String no,String n,char c){
		this(no,n);
		sex = c;
	}
}

public class TestStudent {

	public static void main(String[] args) {
		Student tom = new Student("Tom");
		Student Jerry = new Student("20070718","Jerry");	
		Student cat = new Student("20070718","Jerry",'M');	
	
	}

}