Problem while updating values in table

[vinoth vino]

Hello Programmers, Now i came to preparedStatement and here i m updating some values but it shows me an exception....
I'm having one doubt about updating values to preparedStatement "should i want to initialize the all column names which are in emp5 table for updating values ?"

CODE SNIPPET

package demojdbc;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.PreparedStatement;
import java.sql.DriverManager;

public class MysqlCon{
	
	public static void main(String args[]){
		
		Connection con = null;
		try{
			
			Class.forName("com.mysql.jdbc.Driver");
			
			con = DriverManager.getConnection("jdbc:mysql://localhost:3306/vinoth","root","vino");
			
			String sql = "update emp5 set fname = ? where id =?";
			PreparedStatement stmt = con.prepareStatement(sql);
			stmt.setString(3, "karthi");
			stmt.setInt(1, 6);
			
			int i = stmt.executeUpdate();
			
			System.out.println(i+" Records updated");
			
			con.close();
			
			
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}

output
java.sql.SQLException: Parameter index out of range (3 > number of parameters, which is 2).
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:937)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:872)
at com.mysql.jdbc.PreparedStatement.checkBounds(PreparedStatement.java:3367)
at com.mysql.jdbc.PreparedStatement.setInternal(PreparedStatement.java:3352)
at com.mysql.jdbc.PreparedStatement.setString(PreparedStatement.java:4078)
at demojdbc.MysqlCon.main(MysqlCon.java:21)

[Campbell Ritchie]

Isn't the answer obvious from the error message?

[vinoth vino]

I m trying to update "karthi" to 3rd column(fname) where id = 6 of emp5 table in 6th row @champ

[Campbell Ritchie]

You are trying to update the 1st argument to the prepared statement.