rt.exec throws IO Exception when using the exec whose name is Japanese
on Win98 and WinNT4.0 with JDK1.1.8 build "C".
This worked on JDK1.1.7. So this is a regression bug.

How to reproduce:

1) prepare a exe file with kanji name

  A:\TEST>copy args.exe °ú¿ô.exe /v
               -------- --------
               ascii kanji
 
2) compile RunExe.java
 
  import java.io.*;

  public class RunExe {
    public static void main(String args[]) throws IOException {
      Runtime rt = Runtime.getRuntime();
      Process ps = null;
      try {
        ps = rt.exec(args[0]);
      } catch(IOException e) {
        System.out.println("IO Exception spawning \"" + args[0] + "\"");
      }
      if(null == ps) {
        System.out.println("could not exec \"" + args[0] + "\"");
      } else {
        System.out.println("OK");
        ps.destroy();
      }
    }
  }


3) run RunExe.class with a kanji arg on Windows98/NT

  A:\TEST>java RunExe args
  OK

  A:\TEST>java RunExe °ú¿ô
  IO Exception spawning "°ú¿ô"
  could not exec "°ú¿ô"

(*) °ú¿ô : Japanese Kanji Characters

I can't see this problem on Solaris with JDK1.1.8 build "C".