class person {
private String name;
private int age;
public person (){}
public person(String name ,int age){
this.name=name;
this.age=age;
}
public void setname(String name){...}
public String getname(){..}
public void setage(int age){...}
public int getage(){...}
}
class student extends person {
public student(){}
public student(String name,int age){
super(name,age); // 這里就能訪問到父類私有化成員變量;
}