Sobre a classe Statement

package exemplos;

import java.sql.*;

public class Conexao {
	
	public static String status = "";
	
	public static Connection getConnection(){
		
		Connection conexao = null;
		
		try {
			
			String driver = "com.mysql.jdbc.Driver";  
			  
			String url = "jdbc:mysql://localhost/loja";  
			  
			String usuario = "root";  
			  
			String senha = "";  
			
			Class.forName(driver);  
	        conexao = DriverManager.getConnection(url, usuario, senha);
	        
	        status = "Conexão estabelecida!";
			
		}catch (SQLException e){
			status = e.getMessage();
		}catch (ClassNotFoundException e){
			status = e.getMessage();
		}catch (Exception e){
			status = e.getMessage();
		}
		
		return conexao;
		
	}

}

package exemplos;

import java.sql.*;
import java.beans.*;

public class Iniciar {

	public static void main(String[] args) {
		
		Connection con = Conexao.getConnection();
		System.out.println (Conexao.status);
		
		Statement st = con.createStatement();
		String q = "";
		q += "INSERT INTO Usuarios(Nome, Login, Senha)";
		q += "VALUES('Nissi Miranda', 'nissivm', '123456')";
		st.executeUpdate (q);
		
		/*try{
		String driver = "com.mysql.jdbc.Driver";  
		  
		String url = "jdbc:mysql://localhost/loja";  
		  
		String usuario = "root";  
		  
		String senha = "";  
		
		Class.forName(driver);  
        Connection conexao = DriverManager.getConnection(url, usuario, senha);
        
        System.out.println ("Conexão estabelecida");
		
		}catch (Exception e){
			System.out.println ("Conexão falhou: " + e.getMessage());
		}*/
	}

}