jdk新特性

public static void main(String[] args) {
        try (
                InputStream is = new FileInputStream("F:\\Github\\test\\1.jpg");
                OutputStream os = new FileOutputStream("F:\\Github\\test\\2.jpg");){
            byte buffer[] = new byte[1024];
            int len;
            while((len=is.read(buffer))!=-1){
                os.write(buffer,0,len);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }