content: package com.ammarahmed.mmkv;
  
  import android.content.Context;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  
  public final class Storage {
  
      public static void writeValues(Context context, String filename, byte[] bytes) throws IOException {
          FileOutputStream fos = context.openFileOutput(filename, Context.MODE_PRIVATE);
          fos.write(bytes);
          fos.close();
      }
  
      public static byte[] readValues(Context context, String filename) throws IOException {
          FileInputStream fis = context.openFileInput(filename);
          ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
          byte[] buffer = new byte[1024];
          int bytesRead = fis.read(buffer);
          while(bytesRead != -1) {
              baos.write(buffer, 0, bytesRead);
              bytesRead = fis.read(buffer);
          }
          return baos.toByteArray();
      }
  
      public static boolean exists(Context context, String filename) throws IOException {
          File file = context.getFileStreamPath(filename);
          return file != null && file.exists();
      }
  
      public static void resetValues(Context context, String[] filenames) {
          for(String filename : filenames) {
              context.deleteFile(filename);
          }
      }
  }