src/java.desktop/share/classes/com/sun/media/sound/SoftSynthesizer.java

@@ -636,11 +636,11 @@
             actions.add(new PrivilegedAction<InputStream>() {
                 public InputStream run() {
                     File javahome = new File(System.getProperties()
                             .getProperty("java.home"));
                     File libaudio = new File(new File(javahome, "lib"), "audio");
-                    if (libaudio.exists()) {
+                    if (libaudio.isDirectory()) {
                         File foundfile = null;
                         File[] files = libaudio.listFiles();
                         if (files != null) {
                             for (int i = 0; i < files.length; i++) {
                                 File file = files[i];

@@ -684,13 +684,13 @@
 
                         /*
                          * Look for a default.sf2
                          */
                         for (File systemSoundFontDir : systemSoundFontsDir) {
-                            if (systemSoundFontDir.exists()) {
+                            if (systemSoundFontDir.isDirectory()) {
                                 File defaultSoundFont = new File(systemSoundFontDir, "default.sf2");
-                                if (defaultSoundFont.exists()) {
+                                if (defaultSoundFont.isFile()) {
                                     try {
                                         return new FileInputStream(defaultSoundFont);
                                     } catch (IOException e) {
                                         // continue with lookup
                                     }

@@ -706,11 +706,11 @@
                 public InputStream run() {
                     if (System.getProperties().getProperty("os.name")
                             .startsWith("Windows")) {
                         File gm_dls = new File(System.getenv("SystemRoot")
                                 + "\\system32\\drivers\\gm.dls");
-                        if (gm_dls.exists()) {
+                        if (gm_dls.isFile()) {
                             try {
                                 return new FileInputStream(gm_dls);
                             } catch (IOException e) {
                             }
                         }

@@ -726,11 +726,11 @@
                      */
                     File userhome = new File(System.getProperty("user.home"),
                             ".gervill");
                     File emg_soundbank_file = new File(userhome,
                             "soundbank-emg.sf2");
-                    if (emg_soundbank_file.exists()) {
+                    if (emg_soundbank_file.isFile()) {
                         try {
                             return new FileInputStream(emg_soundbank_file);
                         } catch (IOException e) {
                         }
                     }

@@ -771,16 +771,18 @@
                 OutputStream out = AccessController
                         .doPrivileged((PrivilegedAction<OutputStream>) () -> {
                             try {
                                 File userhome = new File(System
                                         .getProperty("user.home"), ".gervill");
-                                if (!userhome.exists()) {
-                                    userhome.mkdirs();
+                                if (!userhome.isDirectory()) {
+                                    if (!userhome.mkdirs()) {
+                                        return null;
+                                    }
                                 }
                                 File emg_soundbank_file = new File(
                                         userhome, "soundbank-emg.sf2");
-                                if (emg_soundbank_file.exists()) {
+                                if (emg_soundbank_file.isFile()) {
                                     return null;
                                 }
                                 return new FileOutputStream(emg_soundbank_file);
                             } catch (final FileNotFoundException ignored) {
                             }