{"id":809,"date":"2024-10-28T17:37:38","date_gmt":"2024-10-28T17:37:38","guid":{"rendered":"https:\/\/javigomez.org\/?p=809"},"modified":"2025-09-29T20:32:51","modified_gmt":"2025-09-29T20:32:51","slug":"e309-calcular-letra-de-dni-en-java","status":"publish","type":"post","link":"https:\/\/javigomez.org\/index.php\/2024\/10\/28\/e309-calcular-letra-de-dni-en-java\/","title":{"rendered":"E309. Calcular letra de DNI en Java"},"content":{"rendered":"\n<p>El DNI consta de un entero de 8 d\u00edgitos seguido de una letra que se obtiene a partir del n\u00famero de la siguiente forma:<\/p>\n\n\n\n<p>&nbsp;letra = n\u00famero DNI m\u00f3dulo 23<\/p>\n\n\n\n<p>&nbsp;Bas\u00e1ndote en esta informaci\u00f3n, elige la letra a partir de la numeraci\u00f3n de la siguiente tabla:<\/p>\n\n\n\n<p>0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22<\/p>\n\n\n\n<p>T R W A G M Y F P D&nbsp; X&nbsp; B&nbsp; N&nbsp; J&nbsp; Z&nbsp; S&nbsp; Q&nbsp; V&nbsp; H&nbsp; L&nbsp; C&nbsp; K&nbsp; E<\/p>\n\n\n\n<p>&nbsp;y dise\u00f1a una aplicaci\u00f3n en la que, dado un n\u00famero de DNI, calcule la letra que le corresponde. Observa que un n\u00famero de 8 d\u00edgitos est\u00e1 dentro del rango del tipo int<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package U03;\n\nimport java.util.Scanner;\n\n\/*\n * .  El DNI consta de un entero de 8 d\u00edgitos seguido de una letra que se \n * obtiene a partir del n\u00famero de la siguiente forma:\n\u00a0letra = n\u00famero DNI m\u00f3dulo 23\n\u00a0Bas\u00e1ndote en esta informaci\u00f3n, elige la letra a partir de la numeraci\u00f3n de la siguiente tabla:\n0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22\nT R W A G M Y F P D  X  B  N  J  Z  S  Q  V  H  L  C  K  E\n\n *\/\n\n\npublic class E3_09 {\n\n\tpublic static void main(String&#91;] args) {\n\t\tScanner sc = new Scanner(System.in);\n\t\tSystem.out.println(\"DNI(solo los n\u00fameros): \");\n\t\tint dni = sc.nextInt();\n\t\t\n\t\tint resto=dni%23;\n\t\t\n\t\tString letra=switch(resto) {\n\t\tcase 0-> {yield \"T\";}\n\t\tcase 1-> {yield \"R\";}\n\t\tcase 2-> {yield \"W\";}\n\t\tcase 3-> {yield \"A\";}\n\t\tcase 4-> {yield \"G\";}\n\t\tcase 5-> {yield \"M\";}\n\t\tcase 6-> {yield \"Y\";}\n\t\tcase 7-> {yield \"F\";}\n\t\tcase 8-> {yield \"P\";}\n\t\tcase 9-> {yield \"D\";}\n\t\tcase 10-> {yield \"X\";}\n\t\tcase 11-> {yield \"B\";}\n\t\tcase 12-> {yield \"N\";}\n\t\tcase 13-> {yield \"J\";}\n\t\tcase 14-> {yield \"Z\";}\n\t\tcase 15-> {yield \"S\";}\n\t\tcase 16-> {yield \"Q\";}\n\t\tcase 17-> {yield \"V\";}\n\t\tcase 18-> {yield \"H\";}\n\t\tcase 19-> {yield \"L\";}\n\t\tcase 20-> {yield \"C\";}\n\t\tcase 21-> {yield \"K\";}\n\t\tcase 22-> {yield \"E\";}\n\t\tdefault -> {yield \"ERROR\";}\n\t\t};\n\t\t\n\t\tSystem.out.println(\"DNI: \" +dni + letra);\n\t}\n}\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Java U03 09 Letra DNI\" width=\"1200\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/wQ63QrCwJRg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El DNI consta de un entero de 8 d\u00edgitos seguido de una letra que se obtiene a partir del n\u00famero de la siguiente forma: &nbsp;letra &hellip; <\/p>\n","protected":false},"author":1,"featured_media":827,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[203,219],"class_list":["post-809","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-java","tag-letra-dni"],"_links":{"self":[{"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/posts\/809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/comments?post=809"}],"version-history":[{"count":1,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/posts\/809\/revisions"}],"predecessor-version":[{"id":839,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/posts\/809\/revisions\/839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/media\/827"}],"wp:attachment":[{"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/media?parent=809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/categories?post=809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/javigomez.org\/index.php\/wp-json\/wp\/v2\/tags?post=809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}