src/java.base/share/classes/jdk/internal/jrtfs/SystemImage.java

@@ -76,17 +76,17 @@
          if (Files.notExists(explodedModulesDir))
              throw new FileSystemNotFoundException(explodedModulesDir.toString());
          return new ExplodedImage(explodedModulesDir);
      }
  
-     static final String RUNTIME_HOME;
+     private static final String RUNTIME_HOME;
      // "modules" jimage file Path
-     static final Path moduleImageFile;
+     private static final Path moduleImageFile;
      // "modules" jimage exists or not?
-     static final boolean modulesImageExists;
+     private static final boolean modulesImageExists;
      // <JAVA_HOME>/modules directory Path
-     static final Path explodedModulesDir;
+     private static final Path explodedModulesDir;
  
      static {
          PrivilegedAction<String> pa = SystemImage::findHome;
          RUNTIME_HOME = AccessController.doPrivileged(pa);