关于Java中的IO流总结(推荐)

public class MycopyTest {  public static void main(String[] args) {    File src = new File("D:/1.jpg");    // D:/1.jpg必须的存在不然会报错    File dest = new File("D:/2.jpg");    // 如果D:/2.jpg存在则覆盖，如果不存在则新建    streamCopy(src, dest);  }private static void readCopy(File src,File dest)  {    FileReader fr=null;    FileWriter fw=null;    BufferedReader br=null;    BufferedWriter bw=null;    try {      fr=new FileReader(src);      fw=new FileWriter(dest);      br=new BufferedReader(fr);      bw=new BufferedWriter(fw);      String str;      while((str=br.readLine())!=null)      {        bw.write(str);        bw.newLine();      }    }catch (IOException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }    try {      bw.close();      br.close();    } catch (IOException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }  }  private static void streamCopy(File src, File dest) {    FileInputStream fis = null;    FileOutputStream fos = null;    BufferedInputStream bis = null;    BufferedOutputStream bos = null;    try {      fis = new FileInputStream(src);      fos = new FileOutputStream(dest);      bis = new BufferedInputStream(fis);      bos = new BufferedOutputStream(fos);      int len;      byte[] b = new byte[1024];      while ((len = bis.read(b)) != -1) {        bos.write(b, 0, len);        // bos.write(b,0,len);是把读到数组的大小字节写入        // bos.write(b);最后一次如果数组未写满的话就会多读。      }    } catch (IOException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }    try {      bos.close();      bis.close();    } catch (Exception e) {      // TODO Auto-generated catch block      e.printStackTrace();    }  }}