package org.lxh.demo08.g ;
public class HelloDemo{
	protected String name = "LXH" ;		// 只能在本包及不同包的子类中访问
};

package org.lxh.demo08.h ;
import org.lxh.demo08.g.HelloDemo ;
class SubHelloDemo extends HelloDemo{
	public void print(){
		System.out.println("访问受保护属性：" + super.name) ;
	}
};
public class ProtectedDemo01{
	public static void main(String args[]){
		SubHelloDemo sub = new SubHelloDemo() ;
		sub.print() ;
	}
};

package org.lxh.demo08.h ;
import org.lxh.demo08.g.HelloDemo ;
public class ProtectedDemo02{
	public static void main(String args[]){
		HelloDemo sub = new HelloDemo() ;
		System.out.println(sub.name) ;	// 错误的，不同包的类无法访问
	}
};

2、思想领悟

3、命名规范