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Àý×Ócode£ºModiferDemo.java
package com.glust.blog.j2se;
public class ModiferDemo{
//ËÄÖÖ·ÃÎÊȨÏ޵ıäÁ¿£¨ÊôÐÔ£©
private int a;
int b;//friendly
protected int c;
public int d;
//·ÃÎÊÊôÐԵĽӿÚ
public int getA(){
return a;
}
public void setA(int a){
this.a = a;
}
}
Àý×ÓtestCode1£º TestModiferDemo1.java
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo1{
public static void main(String[] args){
ModiferDemo obj = new ModiferDemo();
System.out.println(" a is " + obj.a);//error,private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
System.out.println(" b is " + obj.b);//error,friendly
System.out.println(" c is " + obj.c);//error,protected
System.out.println(" d is " + obj.d);
}
}
Àý×ÓtestCode2£º TestModiferDemo2.java
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo2 extends ModiferDemo{
public static void main(String[] args){
ModiferDemo obj = new ModiferDemo();
System.out.println(" a is " + obj.a);//error£¡private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
System.out.println(" b is " + obj.b);//error£¡friendly·ÃÎÊȨÏÞͬ°üÖеÄÆäËûÀà¿ÉÒÔ·ÃÎÊ
System.out.println(" c is " + obj.c);//ÕýÈ·£¡protected·ÃÎÊȨÏÞ£¬×ÓÀàÖпÉÒÔ·ÃÎÊ
System.out.println(" d is " + obj.d);
}
}
Àý×ÓtestCode3£º TestModiferDemo3.java
package com.glust.blog.j2se;
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo3{
public static void main(String[] args){
ModiferDemo obj = new ModiferDemo();
System.out.println(" a is " + obj.a);//error£¡private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
System.out.println(" b is " + obj.b);//ÕýÈ·£¡frien
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