NIO

package com.zml.nio.test;

import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

import org.junit.Test;


public class ChannelTest {

	@Test
	public void test() throws IOException {
		RandomAccessFile file = new RandomAccessFile("D:\\abc.txt", "rw");
		FileChannel channel = file.getChannel();
		ByteBuffer buf =ByteBuffer.allocate(48);
		int read = channel.read(buf);
		while(read!=-1){
			System.out.println("read:"+read);
			buf.flip();
			while(buf.hasRemaining()){
				System.out.println("remaining:"+(char)buf.get());
			}
			buf.clear();
			read = channel.read(buf);
		}
		file.close();
		
	}
}
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