Error when adding new table when using SClite on Android

I am trying to build a database using SQlite while referring to various sites.
Once I created a table and entered the data into the database, I was able to read it from the database, but when I added a new table, I got an error even if I deleted the application or the code.If you don't mind, please let me know.

***********************************************************************

public class MyOpenHelper extensions SQLiteOpenHelper{

    public MyOpenHelper (Context context) {
        super(context, "NameCommentDB", null, 1);
    }

    @ Override
    public void onCreate (SQLiteDatabase db) {

        db.execSQL("create table person("+"
                "name text not null, " +
                "comment text," +
                "time text," +
                ");");

    }

    @ Override
    public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion) {
    }
}

*************************************************************************************

public class MyOpenHelper extensions SQLiteOpenHelper{

    public MyOpenHelper (Context context) {
        super(context, "NameCommentDB", null, 2);
    }

    @ Override
    public void onCreate (SQLiteDatabase db) {
        db.execSQL("create table person("+"
                "name text not null, " +
                "comment text," +
                "time text," +
                ");");

        db.execSQL("create table oasis("+)
                "name text not null, " +
                "comment text," +
                "time text," +
                ");");
    }

    @ Override
    public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion) {
    }
}

*****************************************************************************************

@Override
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.building_event);
        MyOpenHelper helper=new MyOpenHelper(this);


     ***   finalSQLiteDatabase db=helper.getReadableDatabase();←

**********************************************************************************

E/SQLiteLog:(1)near")":syntax error

E/AndroidRuntime:FATAL EXCEPTION:main

android sqlite

2022-09-30 11:51

1 Answers

I don't know why I succeeded with the success code, but
I think the cause is , after time text.
Please delete it and try it.

db.execSQL("create table person("+)
            "name text not null, " +
            "comment text," +
            "time text" +
            ");");

The same goes for oasis.

2022-09-30 11:51

If you have any answers or tips

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