java-继承实现学生类和老师类案例：：
定义一个父类：
package day08;
public class PersonDemo {
private String name;
private int age;
public PersonDemo(){
}
public PersonDemo(String name,int age){
this.name=name;
this.age=age;
}
public String getName(){
return name;
}
public void setName(String name){
this.name=name;
}
public int getAge(){
return age;
}
public void setAge(int age){
this.age=age;
}
}子类：student
package day08;
public class StudentDemo extends PersonDemo{
public StudentDemo(){
}
public StudentDemo(String name,int age){
super(name,age);//调用父类的有参构造方法
}
}
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