FileInputStream fileIn;            FileOutputStream fileOut;            File file=new File("D:/StreamContent.java");//任意文件路径                       byte[] c=new byte[2];            c[0]=0x0d;            c[1]=0x0a;//用于输入换行符的字节码            String t=new String(c);//将该字节码转化为字符串类型            String s="shskhdgkhskhgk;hdkshkg,";            s+=t+"sdfsdf";            buf=s.getBytes();//转换为Bit流            fileIn=new FileInputStream(file);                                          count=buf.length;            fileOut= new FileOutputStream("D:/FileOutputStreamTest.txt");//要写入的文件路径            fileOut.write(buf,0,count);            count=fileIn.read(buf);            fileOut.write(buf,0,count);