关于记事本跨平台问题

Question

用string的编码方式进行转化应该可以吧。

Answer 1

.  .- .-
                                                        ./    .--...
                                              .-------- 0    .--
                                             /                 .......
                                            '                  ..
                                             '........            ----
                                                      .          --..
                                                       .   .---..   -
                                   分  o               .  '     -.
                                     分               /   '
                                                     / ' ' '
                                   \-分--/....... . '  ' '  '
                                    \ __/ -      - -'  '  ' '
                                                    '  '  ' '
                                     o              '   ' ' '
                                                    '   '  '
                                                     -..'.----------.
                                                        I   ----------
                                                 /////////.

Answer 2

我从中文拷贝一个内容是中文的记事本文件到日文系统，然后用
package test;import java.io.*;public class CodingTest {
  public CodingTest() {
  }  public static void write(String fromEncoding, String toEncoding) throws
      Exception {
    FileInputStream fin = new FileInputStream("c:/a.txt");
    BufferedReader in = new BufferedReader(new InputStreamReader(fin,
        fromEncoding));
    FileOutputStream fout = new FileOutputStream("c:/aa.txt");
    BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fout,
        toEncoding));    String str;    while ( (str = in.readLine()) != null) {
      out.write(str, 0, str.length());
      out.newLine();
      out.flush();    }
  }  public static void main(String args[]) throws Exception {
     write("GB2312", "UTF8");
//    write("GB2312", "MS932");
  }
}
用这个程序读出写入到aa.txt中，发现有部分是乱码。部分不是乱码。不是乱码的是日文系统，中文系统中都存在的字，不存在的为？号。