内部类

package com.gxun.bigdata.study.net;

public class  {
	
	public class SubNet{
		
		public void subNetTest(){
			System.out.println("SubNetTest");
		}
		
	}
	
	public static class SubNetStatic{
		
		public void subNetStaticTest(){
			System.out.println("subNetStaticTest");
		}
		
	}
	
}

package com.gxnu.bigdata.study.net.test;

import org.junit.Test;

import com.gxun.bigdata.study.net.Net;
import com.gxun.bigdata.study.net.Net.SubNet;
import com.gxun.bigdata.study.net.Net.SubNetStatic;;

public class TestNet {
	
	
	public void test(){
		Net net = new Net();
		Net.SubNet nn = net.new SubNet();
		nn.subNetTest();
		
		SubNet ss = net.new SubNet();
		ss.subNetTest();
		
		SubNetStatic st = new SubNetStatic();
		st.subNetStaticTest();
	}	
}