8355558: SJIS.java test is always ignored

Backport-of: c0dc31422d6e7435ad7abdb547dedcc50b7fc0c3

Author: GoeLin

test/jdk/java/io/pathNames/win32/SJIS.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,9 +26,15 @@
    @summary Check that pathnames containing double-byte characters are not
             corrupted by win32 path processing
    @author Mark Reinhold
+   @library /test/lib
 */
 
-import java.io.*;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import jtreg.SkippedException;
 
 
 public class SJIS {
@@ -47,8 +53,11 @@ public static void main(String[] args) throws Exception {
         /* This test is only valid on win32 systems
            that use the SJIS encoding */
         if (File.separatorChar != '\\') return;
-        String enc = System.getProperty("file.encoding");
-        if ((enc == null) || !enc.equals("SJIS")) return;
+        String enc = System.getProperty("native.encoding");
+        if ((enc == null) || !enc.equals("MS932")) {
+            throw new SkippedException(
+                "native.encoding(%s) is not MS932".formatted(enc));
+        }
 
         File f = new File("\u30BD");
         if (f.exists()) rm(f);