java - One or multiple databases SQLite in Android? -

i'm coding app in android use lot of databases in sqlite next schema:

public class dbuser extends sqliteopenhelper {  private static final int version_database = 1;  //name of database. private static final string name_database = "nameofdb.db";  //the creation of table in sql. private static final string table_database = "create table example " +         "(id int)";  private static final string table_database2 = "create table example2 " +         "(id int)";  // more tables...  //constructor. public dbuser(context context) {     super(context, name_database, null, version_database); }  @override public void oncreate(sqlitedatabase db) {     db.execsql(table_database);     db.execsql(table_database2);     //... }  @override public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {     db.execsql("drop table if exists " + table_database);     oncreate(db); }  /****now methods****/ } 

i've, more or less, 5 or 6 java files write differents methods each database create.

i want know if right way or if must put tables in 1 database , write methods in 1 java file.

thanks!