java在讀取大文件上盡量使用緩沖流并且合理配置緩沖流大小這樣性能會(huì)大大升高。
try{
FileInputStream fis =newFileInputStream("/Users/rochuan/Downloads/timg.jpeg");
FileOutputStream fos =newFileOutputStream("timg.jpeg");
BufferedInputStream bis =newBufferedInputStream(fis);
BufferedOutputStream bos =newBufferedOutputStream(fos);
byte[] b =new byte[10];
while(bis.read(b) != -1){
bos.write(b);
}
bos.close();
bis.close();
fis.close();
fos.close();
System.out.println("done!");
}catch(Exception e){
System.out.println(e.fillInStackTrace());
}
