Looking for logging into the Codigo Java site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Codigo Java site. After that you can login as usual with your login credentials.
https://uh-tis.blogspot.com/2014/01/Curso-de-JAVA-Como-hacer-un-Login-con-usuario-y-clave-fijos-sin-conexion-a-Base-de-datos.html
https://codigosparadesarrolladores.blogspot.com/2014/01/Codigo-JAVA-Login-con-usuario-y-contrasena-fijos-sin-conexion-a-Base-de-datos.html
http://www.programaresfacil.co/login-en-java-con-netbeats-a-una-base-de-datos-mysql/
https://jvmao82.wordpress.com/2017/05/05/validar-login-y-usuario-en-java/
https://es.stackoverflow.com/questions/110283/c%C3%B3mo-crear-un-login-en-java
http://pharalax.com/blog/java-y-netbeans-i-formulario-de-login/
https://www.lawebdelprogramador.com/codigo/Java/4661-Inicio-de-sesion-login.html
https://www.tusolutionweb.org/como-hacer-un-login-en-java-netbeans-y-mysql/
https://www.javamexico.org/blogs/edbast/curso_de_java_como_hacer_un_login_con_usuario_y_contrasena_fijos_sin_conexion_base_de_d
http://www.aprendeaprogramar.com/mod/forum/discuss.php?d=2205
http://codigosjava.blogspot.com/2016/06/login-Java-netbeans-con-MySQL.html
http://codigosjava.blogspot.com/2016/02/jframe-con-usuario-y-contrasena-codigo-de-fuente-java.html
http://www.academia.edu/11127787/Crear_un_formulario_de_inicio_de_sesi%C3%B3n_utilizando_NetBeans_IDE