public class FileCopyTest {

private static String inPath = "D:/temp/test.jpg";

private static String outPath = "D:/temp/out.jpg";

public static void main(String[] args) {

try {

copy(inPath,outPath);

} catch (IOException e) {

System.out.println("エラー");

e.printStackTrace();

}

}

// バイナリファイルのコピー

private static void copy(String inPath,String outPath) throws IOException {

DataInputStream dataInStream = new DataInputStream(

new BufferedInputStream(

new FileInputStream(inPath)));

DataOutputStream dataOutStream = 

new DataOutputStream(

  new BufferedOutputStream(

    new FileOutputStream(outPath)));

int readByte=0;

int totalByte=0;

byte[] b=new byte[2048];

while(-1 != (readByte = dataInStream.read(b))){

dataOutStream.write(b, 0, readByte);

totalByte += readByte;

System.out.println("Read: " + readByte + " Total: " + totalByte);

}

dataInStream.close();

dataOutStream.close();

}

}