Deleted DataBaseHelper and added it as inner class in DataHandler

.idea/gradle.xml

@@ -15,6 +15,7 @@
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
+        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/java/org/ddnss/sfs/git/wdg/vokabel_trainer/DataBaseHelper.java

@@ -1,24 +0,0 @@
-package org.ddnss.sfs.git.wdg.vokabel_trainer;
-
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-
-import androidx.annotation.Nullable;
-
-public class DataBaseHelper extends SQLiteOpenHelper {
-
-    public DataBaseHelper(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) {
-        super(context, name, factory, version);
-    }
-
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        db.execSQL("create table if not exists vocTable(deutsch text not null , englisch text not null);");
-    }
-
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-
-    }
-}