Java:将char写入/读取文件会产生不同的结果

Question

我正在尝试将一个简单的字符写入文件并将其重新读入.将字符写入文件似乎工作正常(至少在十六进制编辑器中显示).当我将角色重新读回内存时,它完全是一个完全不同的价值.这是我的示例代码:

public class myclass {

public static void main(String[] args) {
      char myChar = 158; // let myChar = 158

      System.out.println("myChar = "+(int)myChar); // prints 158. Good.   

        try {
            FileOutputStream fileOut = new FileOutputStream("readthis");
                fileOut.write(myChar);
            fileOut.close();
        } catch (IOException e) {
            System.exit(1);
        }


        // If I examine the "readthis" file, there is one byte that has a value of
        // of '9E' or 158. This is what I'd expect.   

        // Lets try to now read it back into memory   


        char readChar = 0;

        try {
            int i = 0;

            FileInputStream fstream = new FileInputStream("readthis");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));

                readChar = (char)br.read();                     


            in.close();

        } catch (IOException e) {
            System.exit(1);
        }

        // Now, if we look at readChar, it's some value that's not 158!
        // Somehow it got read into as 382!   

        // Printing this value results in 382
        System.out.println("readChar = "+(int)readChar);




  }

}

我的问题是,这是怎么发生的？我想readChar等于我写的原始值(158),但我不确定我做错了什么.任何帮助,将不胜感激.谢谢.

Answer 1

您正在编写字节和读取字符.使用a Writer和a Reader,或an OutputStream和an InputStream.