写文件

public static void main(String[] args) throws IOException {
        // 获取文件流
        InputStream fis= new FileInputStream("D:\\桌面\\111\\111.txt");
        
        int index;  
        byte[] bytes = new byte[1024];  
        FileOutputStream fos= new FileOutputStream("D:\\桌面\\111\\222.txt");  
        while ((index = fis.read(bytes)) != -1) {  
            fos.write(bytes, 0, index);  
            fos.flush();  
        } 

        fos.close();  
        fis.close();  
    }