Inserting preparedstatement to database - PSQL

Question

This seems like a really simple problem, but I cannot figure out what my problem is. I have a method addTask which adds some info to our database as seen in this code:

Answer 1

You misunderstood the return value of PreparedStatement#execute().

Please carefully read the javadoc:

Returns:

true if the first result is a ResultSet object; false if the first result is an update count or there is no result.

It thus returns — as fully expected — false on an INSERT query. It returns only true on a SELECT query (for which you'd however usually like to use executeQuery() instead which returns directly a ResultSet).

If you're interested in the affected rows, rather use PreparedStatement#executeUpdate() instead. It returns an int as per the javadoc:

Returns:

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

A return value of 1 or greater would then indicate a successful insert.

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Unrelated to the concrete problem: your code is leaking DB resources. Please carefully read How often should Connection, Statement and ResultSet be closed in JDBC?