BufferedInputStreamTest 带缓存的字节输入流

package IOliu;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class BufferedInputStreamTest {

    public static void main(String[] args) {
        StringBuffer sb = null;
        File file = null;
        File file2 = null;
        FileInputStream fis = null;
        FileOutputStream fos = null;
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;

        try {
            //带缓存的字节输入流
            file = new File("D:\\user.txt");
            fis = new FileInputStream(file);
            bis = new BufferedInputStream(fis);    

            //带缓存的字节输出流
            file2 = new File("D:\\2016.txt");
            fos = new FileOutputStream(file2);
            bos = new BufferedOutputStream(fos);
            int i = 0;
            sb = new StringBuffer();
            try {
                while((i = bis.read())!=-1){
                    char ch = (char)i;
                    sb.append(ch);
                    bos.write(ch);
                }
                System.out.println(sb.toString());
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }finally{
            try {
                bos.flush();
                fis.close();
                fos.close();
                bis.close();
                bos.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

}