netty-tomcat-sample/rpc-tomcatv1/src/main/java/cn/hhj/nio/channel/FileInputDemo.java

package cn.hhj.nio.channel;
import java.io.*;
import java.nio.*;  
import java.nio.channels.*;  
  
public class FileInputDemo {


    static public void main( String args[] ) throws Exception {  
        FileInputStream fin = new FileInputStream("E://test.txt");
        
        // 获取通道  
        FileChannel fc = fin.getChannel();  
          
        // 创建缓冲区  
        ByteBuffer buffer = ByteBuffer.allocate(1024);  
          
        // 读取数据到缓冲区  
        fc.read(buffer);  
        
        buffer.flip();  
          
        while (buffer.remaining() > 0) {  
            byte b = buffer.get();  
            System.out.print(((char)b));  
        }  
          
        fin.close();
    }  
}