You encounter the error while attempting to insert data into a database, accompanied by the message "java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0)".
This error occurs when you call setXxx() methods on a PreparedStatement without specifying placeholders (?) in the SQL query. For instance:
String sql = "INSERT INTO tablename (col1, col2, col3) VALUES (val1, val2, val3)"; PreparedStatement preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1, val1); // Error occurs here
To resolve this issue, include placeholders in the SQL query:
String sql = "INSERT INTO tablename (col1, col2, col3) VALUES (?, ?, ?)"; PreparedStatement preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1, val1);
Note that parameter indices start from 1, and there's no need to quote placeholders in the SQL string. Doing so will result in the same error.
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