为什么这个继承父类的结果会出现NULL
1，源代码
package com.java.demo;
public class Dervied extends Base {
private String name = "dervied";
public Dervied() {
tellName();
printName();
}
public void tellName() {
System.out.println("Dervied tell name: " + name);
}
public void printName() {
System.out.println("Dervied print name: " + name);
}
public static void main(String[] args){
new Dervied();
}
}
class Base {
private String name = "base";
public Base() {
tellName();
printName();
}
public void tellName() {
System.out.println("Base tell name: " + name);
}
public void printName() {
System.out.println("Base print name: " + name);
}
}
,2，结果
Dervied tell name: null
Dervied print name: null
Dervied tell name: dervied
Dervied print name: dervied
