duoduobingbing commented on issue #4261:
URL: https://github.com/apache/netbeans/issues/4261#issuecomment-1161917579

   I've investigated this further and found the culprit. It's because of 
[PR#3863](https://github.com/apache/netbeans/pull/3836). 
   
   Printing out
   ```
   System.out.println(Charset.defaultCharset());
   System.out.println(System.getProperty("file.encoding"));
   System.out.println(System.getProperty("native.encoding"));
   System.out.println(System.getProperty("sun.jnu.encoding"));
   ```
   got the answer.
   
   This got me the following results for JDK18 and JDK17:
   ```
   UTF-8
   UTF-8
   Cp1252
   Cp1252
   ```
   
   Setting `native.encoding` via `-Dnative.encoding=utf-8` under Windows does 
not change the value that is obtainable via 
`System.getProperty("native.encoding")`. It always reflects the output of 
`sun.jnu.encoding` which is also not changeable via java command line under 
Windows.
   
   PR#3863 incorrectly assumes that `native.encoding` is `null` when not set 
explicitly, which its not true under Windows. Neither for JDK17 nor JDK18. So 
under Windows Netbeans just uses `sun.jnu.encoding` regardless of configuration 
for the output window which is for my machine always Windows1252.
   


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