将pdf文件以二进制形式拆分并且写入另一个pdf

    static public void main(String[] args){
        File file=new File("C:\\ceshi2\\ceshi.pdf");
        File file2=new File("C:\\ceshi2\\123.pdf");
        try {
            InputStream InputStream=new FileInputStream(file);
            OutputStream outputStream=new FileOutputStream(file2);
            int bit;
            while((bit=InputStream.read())!=-1){
                System.out.println(bit);
                outputStream.write(bit);
            }
            InputStream.close();
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }