How to pass sqlite data from java to javascript

I want send data to javascript to show in my html page.

This is my java code to create json but I don't know how can I convert my string variable to json object and how get that in to javascript:

public void ReadDB()
    {
        final SQLiteDatabase mydatabase1 = openOrCreateDatabase("CopyCollection", MODE_PRIVATE, null);
        //==================== Read Database =========================
        String tmp = "";
        Cursor c = mydatabase1.rawQuery("SELECT * FROM Details ", null);
        if(c.moveToFirst()){
            do{
                String id = c.getString(0);
                String app = c.getString(1);
                String txt = c.getString(2);
                String text_time = c.getString(3);
                tmp += "{ID:"+id+",App:'"+app+"',Content:'"+txt+"',Date:'"+text_time+"'},";
            }while(c.moveToNext());
        }
        JsonTxt = "["+tmp+"]";
        c.close();
        mydatabase1.close();
}