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().