Why is my JDBC code throwing a MySQLSyntaxError Exception even though the SQL statement works in Workbench?

JDBC Encounters MySQLSyntaxError Exception with Valid Syntax

While exploring a JDBC application communicating with a MySQL database, developers may stumble upon the dreaded MySQLSyntaxError Exception. Intriguingly, the same INSERT statement executes seamlessly within MySQL Workbench, leaving one perplexed.

The culprit lies in an overlooked detail within the Java code:

<code class="java">sInserim.executeUpdate(sqlCommandInserim);</code>

Here, the developer inadvertently attempts to execute the raw SQL string, which includes placeholders (?). However, for a PreparedStatement, only the statement itself should be executed, without the parameters.

To rectify this, replace the above line with:

<code class="java">sInserim.executeUpdate();</code>

Utilizing the executeUpdate() method without parameters ensures that the PreparedStatement is executed with the set values. The executeUpdate(sqlString) method should solely be employed for Statement objects.

As a side note, it's crucial to embrace proper resource management by closing the PreparedStatement in a finally block. This prevents resource leakage in the event of exceptions, a practice that extends to Connection, Statement, and ResultSet objects.

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