private void DBBackup() {
    try {
        File sd = Environment.getExternalStorageDirectory();
        File data = Environment.getDataDirectory();

        if (sd.canWrite()) {
            String currentDBPath = "/data/com.jti.mikee.jti_pos/databases/" + DBHelper.DB_NAME;
            String backupDBPath = "DBTRYBACKUP";
            File currentDB = new File(data, currentDBPath);
            File backupDB = new File(sd, backupDBPath);

            if (currentDB.exists()) {
                FileChannel src = new FileInputStream(currentDB).getChannel();
                FileChannel dst = new FileOutputStream(backupDB).getChannel();
                dst.transferFrom(src, 0, src.size());
                src.close();
                dst.close();
            }
        }
    } catch (Throwable e) {
        e.printStackTrace();
    }
}

try {
                File sd = android.os.Environment.getExternalStorageDirectory();

                if (sd.canWrite()) {
                    File backupDB = new File("/storage/emulated/legacy/DBTRYBACKUP");
                    File currentDB = new File(getDatabasePath(DBHelper.DB_NAME).getPath());

                    FileChannel src = new FileInputStream(backupDB).getChannel();
                    FileChannel dst = new FileOutputStream(currentDB).getChannel();
                    dst.transferFrom(src, 0, src.size());
                    src.close();
                    dst.close();
                    Toast.makeText(getApplicationContext(), "Import Successful!", Toast.LENGTH_SHORT).show();
                }
            } catch (Throwable e) {
                Toast.makeText(getApplicationContext(), "Import Failed!", Toast.LENGTH_SHORT).show();
                e.printStackTrace();
            }
        }