超类与子类

package ldm;
import java.util.Scanner;
class Person{
	public String name;
	public String getName(){
		return name;
	}
}
class Employee extends Person{
	public int employeeNumber;
	public int getEmployeeNumber() {
		return employeeNumber;
	}
}
class Mannager extends Employee{
	public String responsibilities;
	public String getResponsibilities() {
		return responsibilities;
	}
}
public class hello {

	public static void main(String[] args) {
		Employee li=new Employee();
		li.name="Li Ming";
		li.employeeNumber=123456;
		System.out.println(li.getName());
		System.out.println(li.getEmployeeNumber());
		Mannager he=new Mannager();
		he.name="He Xia";
		he.employeeNumber=543469;
		he.responsibilities="Internet project";
		System.out.println(he.getName());
		System.out.println(he.getEmployeeNumber());
		System.out.println(he.getResponsibilities());
	}
}