JAVA CREATE SQLITE DATABASE HOW TO
JAVA CREATE SQLITE DATABASE ANDROID
JAVA CREATE SQLITE DATABASE CODE

My constructor will only be called by my code. I generated it with four arguments, but that's more than I need. So the next version is two, the next three and so on. Your first database structure can be number one, but if you need to change the database structure after you've released an application, each time you release a new version of the structure, you should increment this value by one. The database version is managed by the framework. I'll ad another constant in this will be an integer, and I'll set its name as db_version, and I'll set it to a value of one. It's a convenience and it will help you recognize the file easily if you go look for it no the file system of the device. Then I'll set the type as string, and I'll create a constant named DB file name, and I'll set it as nadias.db. I'll add those here, I'll start with PSF for public static and final, and I'll press tab to complete that.

I'll need two constants that represent the name of the database file and the current version of my database structure. So I'll select that and then i'll choose the first version of the constructor and click okay, and the error indicators go away, and I'm ready to start adding some custom code. So I'll follow that path again, and this time I'm being asked to create a constructor method.

JAVA CREATE SQLITE DATABASE CODE

I'll add those to my code and I see that there's still an error indicator. There are two abstract methods that you must override, named on create, and on upgrade. I'll click into that line of code and use an intention action and choose implement methods. I'll click okay, and that creates the class, and I immediately see a warning. I'll name my class DD helper and I'll set its super class as SQL lite open helper from the package. The execution of these SQL statements will go into the open helper class, and so now I'm ready to create that class. I won't actually execute these lines of code here though. I also have a bi of code here to delete or drop the table from the database. The real column matches the double type in Java. It has five strings, an integer, and a double value, and in my SQL create statement, once again, I have five text fields. In my application I've created a model class named data item, and it has fields named item ID, item name, and so on. Which is this simple string constant, but it's important to match the datatypes of the columns to the types of your model fields. You actually declare the structure of the table in the SQL create statement. Now the name of the table can be pretty much anything you want it to be, and the names of the columns can be whatever you want as well. I'll select all of this code and then copy and paste it over into my class. So I've created a gist that I can copy from. Setting the name of the table, the names and types of its columns, and other critical information. This class will include a number of constants.

The name of the class will be items table. I'll start by creating a class for the database table, and I'm going to put this into a new package that I'll name database. As with other previous projects, I have some sample data that I'll eventually import into the database, and the model class that hints at the structure for the database table.

JAVA CREATE SQLITE DATABASE HOW TO

I'll describe how to do this in the project named create database.

JAVA CREATE SQLITE DATABASE ANDROID

dao import import import import import import import .- The first step in working with SQL Lite in Android is to define your database and table structure and the best practice for this is to create a java class that extends a class named SQL Lite open helper.

Java create sqlite database