Generating a UTF-8 file from a jar-File

Question

I want to create a UTF-8 file from a jar-file with the following code:

public class UTF8 {
 public static void main(String[] args) throws Exception {
  BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(
    "utf8.txt"), "UTF8"));
  out.write("Look at this BASTÖÖÜÜÄÄ!");
 }
}

This code works very well using eclipse. But if I pack it to a jar file, it uses a platform depended file encoding (Cp1252 for example on Windows). What could I do against that?

Answer 1

In the JVM options field on the JRE tab in Launch4j (after loading your configuration file) enter the following:

-Dfile.encoding=UTF8

ALternatively, can specify the same thing in an ini file for your application - see the launch4j documentation at:

http://launch4j.sourceforge.net/docs.html#Additional_jvm_options

Answer 2

1. "UTF8" should be "UTF-8" .

2. Also OutputStreamReader(outputStream, encosingString) throws UnsupportedEncodingException which you should catch.

3. Major mistake: never catch (or pass to main) a generic Exception

    public static void main(String[] args) throws Exception {} 

   This prevented you to see what your real exception was and where happened.

Answer 3

The rule of thumb when debugging encoding problems: if you have non-us-ascii letters in string literals, try to replace them by Unicode escapes (ie BAST\Ö\Ö\Ü\Ü\Ä\Ä ). If the problem disappears, you have a source/compiler encoding mismatch.

For example, the behaviour you describe may happen if your source encoding is Windows-1252 whereas compiler encoding is UTF-8.

Answer 4

i faced the same problem .. and i solved it with java -Dfile.encoding=UTF8 -jar CAP.jar ( where CAP the name of the JAR File)

I mad a batch file. open text file, write the line above and save it as .bat and it should work

Answer 5

尝试使用"UTF-8" 。