How do you determine if an insert or update was successful using Java and MySQL?

Question

I am using Java to connect to a MySQL database. I am trying to insert or update data into the database.

Even though I am quite sure the insert was successful, it returns false.

According to the "execute" API, the return value is "true if the first result is a ResultSet object; false if it is an update count or there are no results".

How can I determine whether or not my insert or update was successful?

    public boolean insertSelections(String selection, String name){         String sql ="INSERT INTO WORKREPORT VALUES (?,?,?,?,?)";         boolean action = false;         try {             PreparedStatement stmt = conn.prepareStatement(sql);             SimpleDateFormat dateFormat =  new java.text.SimpleDateFormat("yyyy：MM：dd hh:mm:ss");             String formatDate = dateFormat.format(new java.util.Date(System.currentTimeMillis()));              java.util.Date mDate = dateFormat.parse(formatDate);             java.sql.Timestamp timeStamp = new java.sql.Timestamp(System.currentTimeMillis()); //          Date time= new Date(mDate.getTime());              stmt.setInt(1, Integer.parseInt(getNumberByName(name).trim()));             stmt.setString(2, name); //          stmt.setDate(3, time);             stmt.setTimestamp(3, timeStamp);             stmt.setString(4, selection);             stmt.setString(5, "N/A");             action = stmt.execute();         } catch (SQLException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }   catch (ParseException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }            return action;     } 

Answer 1

Since you are using PreparedStatement you can call executeUpdate() -

 int count = stmt.executeUpdate();  action = (count > 0); // <-- something like this. 

From the Javadoc (Returns) link above, emphasis added,

either (1) the row count for SQL Data Manipulation Language (DML) statements or (2) 0 for SQL statements that return nothing.

If you want to insert a large number of entries, I would prefer addBatch() and executeBatch().