设计一个大学类，封装其不需要暴露的内部属性和行为，并提供对外服务的方法
class University
{
private String name;
private String address;
public String getName() { return name; }
public void setName(String n) { name = n; }
public String getAddress() { return address; }
public void setAddress(String a) { adress = a; }
public void ShowInfo() { System.out.println("Name:" + name + ", Address:" + address); }
}