[Solved] Missing Syntax for displaying data in listview [duplicate]

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You are getting null object exception because you have not initialise SQLiteDatabase before do operation

Just need to replace your method

public void executeEventInsert(String name, String score){
     //For write data to your database
     SQLiteDatabase db = this.getWritableDatabase();
    String query="INSERT INTO universityFinder(univName, score) VALUES('"+name+"','"+score+"');";
    db.execSQL(query);
}

and 

public ArrayList<HashMap<String,String>> executeSelectEvents(int input){
    String query="select * from "+TABLE_NAME+ " where " +COLUMN_SCORE+" >="+input;
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor cursor= db.rawQuery(query,null);
    ArrayList<HashMap<String,String>> events=new ArrayList<>();
    while (cursor.moveToNext()){
        HashMap<String,String> event=new HashMap<>();

        String colUniversityId=cursor.getColumnName(0);
        String colUniversityIdValue=cursor.getString(0);
        String colUniversityName=cursor.getColumnName(1);
        String colUniversityValue=cursor.getString(1);


        event.put(colUniversityId,colUniversityIdValue);
        event.put(colUniversityName,colUniversityValue);
        events.add(event);
    }
    return events;
}

Happy coding 🙂

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solved Missing Syntax for displaying data in listview [duplicate]