Why do you insist on equating prepared statements and placeholders? You even went to the trouble of highlighting the error?!

Both Perl and Java have prepared statements and placeholders.

                                                Placeholder
                                                    v
my $sql = "INSERT INTO my_table (col_string) VALUES(?)";
my $sth = $dbh->prepare($sql);
     ^
  Prepared statement
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                                                   Placeholder
                                                       v
String sql = "INSERT INTO my_table (col_string) VALUES(?)";
PreparedStatement pstmt = connection.prepareStatement(sql);
                    ^
                 Prepared statement
[download]