diff --git a/app/src/main/kotlin/org/cosmicide/adapter/EditorAdapter.kt b/app/src/main/kotlin/org/cosmicide/adapter/EditorAdapter.kt
index 8f336e237..6beb1c32c 100644
--- a/app/src/main/kotlin/org/cosmicide/adapter/EditorAdapter.kt
+++ b/app/src/main/kotlin/org/cosmicide/adapter/EditorAdapter.kt
@@ -12,6 +12,13 @@
  * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
  */
 
+/*
+ * This file is part of Cosmic IDE.
+ * Cosmic IDE is a free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ * Cosmic IDE is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package org.cosmicide.adapter
 
 import android.content.res.Configuration
@@ -28,7 +35,6 @@ import io.github.rosemoe.sora.event.ContentChangeEvent
 import io.github.rosemoe.sora.event.SubscriptionReceipt
 import io.github.rosemoe.sora.lang.EmptyLanguage
 import io.github.rosemoe.sora.langs.textmate.TextMateColorScheme
-import io.github.rosemoe.sora.langs.textmate.TextMateLanguage
 import io.github.rosemoe.sora.langs.textmate.registry.ThemeRegistry
 import io.github.rosemoe.sora.widget.subscribeEvent
 import kotlinx.coroutines.Dispatchers
@@ -215,7 +221,13 @@ class EditorAdapter(val fragment: Fragment, val fileViewModel: FileViewModel) :
                 }
 
                 "class" -> {
-                    editor.setEditorLanguage(TextMateLanguage.create("source.java", true))
+                    editor.setEditorLanguage(
+                        TsLanguageJava.getInstance(
+                            editor,
+                            project,
+                            file
+                        )
+                    )
                 }
 
                 else -> {
diff --git a/app/src/main/kotlin/org/cosmicide/fragment/ProjectOutputFragment.kt b/app/src/main/kotlin/org/cosmicide/fragment/ProjectOutputFragment.kt
index e2c49d714..add91aed7 100644
--- a/app/src/main/kotlin/org/cosmicide/fragment/ProjectOutputFragment.kt
+++ b/app/src/main/kotlin/org/cosmicide/fragment/ProjectOutputFragment.kt
@@ -19,6 +19,13 @@
  * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
  */
 
+/*
+ * This file is part of Cosmic IDE.
+ * Cosmic IDE is a free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ * Cosmic IDE is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package org.cosmicide.fragment
 
 import android.os.Bundle
@@ -91,7 +98,8 @@ class ProjectOutputFragment : BaseBindingFragment<FragmentCompileInfoBinding>()
                 setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE)
             }
         }
-            checkClasses()
+
+        binding.infoEditor.postDelayed(::checkClasses, 250)
     }
 
     fun checkClasses() {
@@ -126,7 +134,6 @@ class ProjectOutputFragment : BaseBindingFragment<FragmentCompileInfoBinding>()
                         text.getColumnCount(text.lineCount - 1),
                         p0.toChar().toString()
                     )
-                    binding.infoEditor.invalidate()
                 }
             }
         })
diff --git a/kotlinc/src/main/java/org/jetbrains/kotlin/cli/jvm/compiler/jarfs/FastJarFileSystem.kt b/kotlinc/src/main/java/org/jetbrains/kotlin/cli/jvm/compiler/jarfs/FastJarFileSystem.kt
index 7beb7cdbc..80fcced19 100644
--- a/kotlinc/src/main/java/org/jetbrains/kotlin/cli/jvm/compiler/jarfs/FastJarFileSystem.kt
+++ b/kotlinc/src/main/java/org/jetbrains/kotlin/cli/jvm/compiler/jarfs/FastJarFileSystem.kt
@@ -5,6 +5,13 @@
  * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
  */
 
+/*
+ * This file is part of Cosmic IDE.
+ * Cosmic IDE is a free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ * Cosmic IDE is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License along with Cosmic IDE. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 /*
  * This file is part of Cosmic IDE.
  * Cosmic IDE is a free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
@@ -106,7 +113,11 @@ private fun prepareCleanerCallback(): ((ByteBuffer) -> Unit)? {
     return try {
         // API 26+ already allow using these methods
 //        if (IS_PRIOR_9_JRE) {
-        val cleaner = Class.forName("java.nio.DirectByteBuffer").getMethod("cleaner")
+        val directByteBuffer = Class.forName("java.nio.DirectByteBuffer")
+        if (directByteBuffer.declaredMethods.any { it.name == "cleaner" }.not()) {
+            return null
+        }
+        val cleaner = directByteBuffer.getMethod("cleaner")
         cleaner.isAccessible = true
 
         val clean = Class.forName("sun.misc.Cleaner").getMethod("clean")