父类:
package org.marsdroid;
public class Person{
protected String name;
public int age;
void eat(){
System.out.println("eat");
}
}
子类:
package com.marsdroid;
import org.marsdroid.Person;
class Student extends Person {
Person p = new Student();
void introduce(){
p.name = "zhangsan";
p.age = 10;
System.out.println("姓名:"+name+",年龄:"+age);
}
}
子类这样写就报protected类型无法访问到
子类:
package com.marsdroid;
import org.marsdroid.Person;
class Student extends Person {
Person p = new Student();
p.name = "zhangsan";
p.age = 10;
void introduce(){
System.out.println("姓名:"+name+",年龄:"+age);
}
}
子类这样写就报 p.name;p.age需要标识符;
我想保留protected类型,子类也想保留p.name;p.age 和输出,怎么写正确?