Answer Posted / trio

boolean execute()
Executes the SQL statement in this PreparedStatement
object, which may be any kind of SQL statement.

ResultSet executeQuery()
Executes the SQL query in this PreparedStatement object and
returns the ResultSet object generated by the query.

int executeUpdate()
Executes the SQL statement in this PreparedStatement
object, which must be an SQL INSERT, UPDATE or DELETE
statement; or an SQL statement that returns nothing, such
as a DDL statement.

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