import java.sql.*;

public class JdbcExecuteupdateExample {

    public static void main(String args[]) {

        Connection con = null;
        Statement st = null;

        String url = "jdbc:mysql://localhost:3306/";
        String db = "komal";
        String driver = "com.mysql.jdbc.Driver";
        String user = "root";
        String pass = "root";

        try {
            Class.forName(driver);
            con = DriverManager.getConnection(url + db, user, pass);
            con.setAutoCommit(false);
            st = con.createStatement();

            String sql = "update person set cname='Rakesh' where id=4";
            st.executeUpdate(sql);

            System.out.println("Table updated.");

        } catch (Exception e) {
            System.out.println(e);
        }
    }
}