Special characters when run in netbeans are showing correctly, but when running “jar” file strange characters appear

问题

Seems like a simple problem, but even after searching forum and web I could not find an answer.

When I run my program in netbeans all the special characters like ä, ö, ü are showing correctly. But when I run "jar" file of the same project (I did clean and rebuild) some strange characters as @A &$ and so on are appearing instead of correct character. Any help would be appreciated.

//edited 22. 08. 2012 00:46
I thought the solution would be easier so I didn't post any code or details. Ok then:

//input file is in UTF-8
try {
  BufferedReader in = new BufferedReader(new FileReader("fin.dir"));
  String line;
  while ((line = in.readLine()) != null) {
    processLine(line, 0);
  }
  in.close();
} catch (FileNotFoundException ex) {
  System.out.println(ex.getMessage());
} catch (IOException ex) {
  System.out.println(ex.getMessage());
}

I am displaying characters in this way:

JOptionPane.showMessageDialog(rootPane, "Correct!\n\n" 
  + testingFin.getWord(), "Congrats", 1);`

回答1:

From the description of FileReader:

Convenience class for reading character files. The constructors of this class assume that the default character encoding and the default byte-buffer size are appropriate. To specify these values yourself, construct an InputStreamReader on a FileInputStream.

If you're on Windows, the default encoding is ISO-8859-1, so as Jon commented, the encoding problem is occurring on input. Try this:

in = new BufferedReader(
    new InputStreamReader(new FileInputStream("fin.dir"),"UTF-8"));

回答2:

Add your netbeans setting under YOURNETBEANS/etc/netbeans.conf likes this;

    -J-Dfile.encoding=UTF-8

来源：https://stackoverflow.com/questions/12029455/special-characters-when-run-in-netbeans-are-showing-correctly-but-when-running

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java

netbeans

jar

special-characters