缓冲流（数据的复制粘贴）IO流

package jinjieshilie;
import java.io.*;

public class huanchongliu {

	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		BufferedInputStream hcfz=new BufferedInputStream( new FileInputStream("H:/ab.java"));
		BufferedOutputStream hczt=new BufferedOutputStream(new FileOutputStream("E:/ab.java"));
		byte[] hc=new byte[2048];//数字是缓冲区大小，单位是字节
		int ff;
		ff=hcfz.read(hc);
		while(ff!=(-1)){
			hczt.write(hc,0,ff);
			ff=hcfz.read(hc);
		}
		hczt.flush();//把最后在管道中的吸取出来
		hczt.close();
		hcfz.close();

	}

}