https://code.videolan.org/videolan/libbluray/-/commit/8f26777b1ce124ff761f80ef52d6be10bcea323e
https://bugs.gentoo.org/844187

From 8f26777b1ce124ff761f80ef52d6be10bcea323e Mon Sep 17 00:00:00 2001
From: Fridrich Strba <fstrba@suse.com>
Date: Mon, 25 Apr 2022 14:28:58 +0300
Subject: [PATCH] Fix build failure after Oracle Java CPU for April 2022

--- a/src/libbluray/bdj/java/java/io/BDFileSystem.java
+++ b/src/libbluray/bdj/java/java/io/BDFileSystem.java
@@ -227,6 +227,17 @@ public abstract class BDFileSystem extends FileSystem {
         return fs.isAbsolute(f);
     }
 
+    public boolean isInvalid(File f) {
+        try {
+            Method m = fs.getClass().getDeclaredMethod("isInvalid", new Class[] { File.class });
+            Object[] args = new Object[] {(Object)f};
+            Boolean result = (Boolean)m.invoke(fs, args);
+            return result.booleanValue();
+        } finally {
+            return false;
+        }
+    }
+
     public String resolve(File f) {
         if (!booted)
             return fs.resolve(f);