Android Java - SQLite Database not being created

I am trying to create a login and register activity for a Tic Tac Toe game I am creating for an Android device. I have created two activities; DBHandler and Login, which should enable the database to be created. However, when I go to view it in DDMS view, no folders or files have been created.

DB Handler Class:

package com.example.tictactoe;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseErrorHandler;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;

public class DBHandler extends SQLiteOpenHelper {
        private static final int DATABASE_VERSION = 8;
        private static final String DATABASE_NAME = "userDB.db";
        private static final String TABLE_USER = "user";
        public static final String COLUMN_ID = "id";
        public static final String COLUMN_LOGIN = "login";
        public static final String COLUMN_PASSWORD = "password";
        
        public DBHandler(Context context, String name, CursorFactory factory,
                        int version) {
                super(context, DATABASE_NAME, factory, DATABASE_VERSION);
                // TODO Auto-generated constructor stub
        }
        @Override
        public void onCreate(SQLiteDatabase db) {
                // TODO Auto-generated method stub
                String CREATE_USER_TABLE = "CREATE TABLE " + TABLE_USER + " ("
                                 + COLUMN_ID + " INTEGER PRIMARY KEY, " + COLUMN_LOGIN + " TEXT, "
                                 + COLUMN_PASSWORD + " TEXT" + ")";
                                db.execSQL(CREATE_USER_TABLE);
        }
        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
                // TODO Auto-generated method stub
        }
        
        public void addUser(Login user) {
                 ContentValues values = new ContentValues();
                 values.put(COLUMN_LOGIN, user.getLogin());
                 values.put(COLUMN_PASSWORD, user.getPassword());
                 SQLiteDatabase db = this.getWritableDatabase();
                 db.insert(TABLE_USER, null, values);
                 db.close();
                }
        
        public Login loginUser(String username, String password) {
                String query = "Select * FROM " + TABLE_USER + " WHERE " + COLUMN_LOGIN + " = \"" +
                 username + "\"" + " AND " + COLUMN_PASSWORD +"=\""+password+"\"";
                SQLiteDatabase db = this.getWritableDatabase();
                Cursor cursor = db.rawQuery(query, null);
                Login user = new Login();
                if (cursor.moveToFirst()) {
                 cursor.moveToFirst();
                 user.setID(Integer.parseInt(cursor.getString(0)));
                 cursor.close();
                } else {
                 user = null;
                }
                db.close();
                return user;
        }
        
}

Login Class:

package com.example.tictactoe;

public class Login {
private int id;
private String login;
private String password;
public Login() {
}
public Login(int id, String login, String password) {
 this.id = id;
 this.login = login;
 this.password = password;
}
public Login(String login, String password) {
 this.login = login;
 this.password = password;
}
public void setID(int id) {
 this.id = id;
}
public int getID() {
 return this.id;
}
public void setLogin(String login) {
         this.login = login;
        }
        public String getLogin() {
         return this.login;
        }
        public void setPassword(String password) {
                 this.password = password;
                }
                public String getPassword() {
                 return this.password;
                }
}

Login Activity:

package com.example.tictactoe;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;

public class MainloginActivity extends Activity implements OnClickListener {

        EditText txtUsername;
        EditText txtPassword;
        ImageButton login_button;
        ImageButton register_button;
        
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_mainlogin);
                
                txtPassword = (EditText) findViewById(R.id.txtPassword);
                txtUsername = (EditText) findViewById(R.id.txtUsername);
                register_button = (ImageButton) findViewById(R.id.btn_userlogin);
                register_button.setOnClickListener(this);
                register_button.setEnabled(false);
        }
        
        public void newUser(View view) {
                DBHandler dbHandler = new DBHandler(this, null, null, 1);
                String password = (txtUsername.getText().toString());
                Login User = new Login(txtPassword.getText().toString(), password);
                dbHandler.addUser(User);
                txtPassword.setText("");
                txtUsername.setText("");
                }
        
        public void loginUser(View view) {
                DBHandler dbHandler = new DBHandler(this, null, null, 1);
                Login user = dbHandler.loginUser(txtPassword.getText().toString(), 
                                txtUsername.getText().toString());
                if (user != null) {
                        register_button.setEnabled(true);
                } 
        }
        
        

        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                // Inflate the menu; this adds items to the action bar if it is present.
                getMenuInflater().inflate(R.menu.mainlogin, menu);
                return true;
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
                // Handle action bar item clicks here. The action bar will
                // automatically handle clicks on the Home/Up button, so long
                // as you specify a parent activity in AndroidManifest.xml.
                int id = item.getItemId();
                if (id == R.id.action_settings) {
                        return true;
                }
                return super.onOptionsItemSelected(item);
        }

        @Override
        public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent i;
                 switch (v.getId()) {
                 
                 case R.id.btn_userlogin:
                 i = new Intent(this, Homepage.class);
                 startActivity(i);
                 break;
                 }
                
        }
}

Any help is appreciated, thank you.