{"id":323,"date":"2019-07-29T14:58:06","date_gmt":"2019-07-29T14:58:06","guid":{"rendered":"https:\/\/micheladrianomedeiros.com.br\/blog\/?p=323"},"modified":"2019-07-29T14:58:09","modified_gmt":"2019-07-29T14:58:09","slug":"como-resolver-problemas-com-java-1","status":"publish","type":"post","link":"https:\/\/micheladrianomedeiros.com.br\/blog\/como-resolver-problemas-com-java-1\/","title":{"rendered":"Como Resolver Problemas com Java #1"},"content":{"rendered":"\n<p class=\"has-text-color has-vivid-cyan-blue-color\"><strong>Criando um Ambiente de\nDesenvolvimento<\/strong><\/p>\n\n\n\n<p><strong>Problema<\/strong>: voc\u00ea\nquer instalar o Java para experimentar esta linguagem. Voc\u00ea tamb\u00e9m quer\ninstalar uma IDE para utilizar o Java.<\/p>\n\n\n\n<p><strong>Solu\u00e7\u00e3o<\/strong>: voc\u00ea\nvai ter que fazer o download do JDK e a IDE Netbeans a qual indico, mas h\u00e1\noutras que voc\u00ea pode utilizar.<\/p>\n\n\n\n<p>Acesse o link <a href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/desenvolvendo-jogos-com-java-1\/\">https:\/\/micheladrianomedeiros.com.br\/blog\/desenvolvendo-jogos-com-java-1\/<\/a>\nneste\nartigo mostro como instalar o JDK e o Netbeans.<\/p>\n\n\n\n<p>Uma p\u00e1gina para ficar\natualizado sobre o mundo do Java \u00e9 <a href=\"https:\/\/www.oracle.com\/technetwork\/java\/index.html\">https:\/\/www.oracle.com\/technetwork\/java\/index.html<\/a>\neu\ntenho um p\u00e1gina no Facebook que coloco coisas que acho interessante caso te interesse\n<a href=\"https:\/\/www.facebook.com\/viciojava\/\">https:\/\/www.facebook.com\/viciojava\/<\/a>\n<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\"><strong>Escrevendo um Hello World<\/strong><\/p>\n\n\n\n<p><strong>Problema<\/strong>: voc\u00ea\ninstalou o JDK e o Netbeans e agora quer fazer um simples programa para\nverificar se tudo est\u00e1 funcionando corretamente.<\/p>\n\n\n\n<p><strong>Solu\u00e7\u00e3o<\/strong>: primeiro\nabra o Netbeans, no meu caso estou utilizando o Netbeans 11.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"757\" height=\"367\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/1-11.png\" alt=\"\" class=\"wp-image-324\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/1-11.png 757w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/1-11-300x145.png 300w\" sizes=\"auto, (max-width: 757px) 100vw, 757px\" \/><\/figure><\/div>\n\n\n\n<p>Segundo: vamos criar um\nprojeto. Para isto clique em File-&gt;New Project&#8230;, escolha Java with Maven e\nJava Aplication, se voc\u00ea estiver utilizando o Netbeans 8 a escolha pode ser\nJava e Java Aplication, clique em Next.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"497\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/2-7.png\" alt=\"\" class=\"wp-image-325\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/2-7.png 721w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/2-7-300x207.png 300w\" sizes=\"auto, (max-width: 721px) 100vw, 721px\" \/><\/figure><\/div>\n\n\n\n<p>Terceiro: d\u00ea um nome para o projeto\no meu \u00e9 Ex1, escolha o local onde a sua aplica\u00e7\u00e3o vai ser salva (E:\\JavaProblemas),\no Group id: pode deixar padr\u00e3o como est\u00e1 a\u00ed para voc\u00ea, a Version: pode deixar\npadr\u00e3o e o Package tamb\u00e9m pode deixar padr\u00e3o. Clique em Finish.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"724\" height=\"360\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/3-5.png\" alt=\"\" class=\"wp-image-326\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/3-5.png 724w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/3-5-300x149.png 300w\" sizes=\"auto, (max-width: 724px) 100vw, 724px\" \/><\/figure><\/div>\n\n\n\n<p>Quarto: vamos criar uma classe\nprincipal para o Java, algumas IDEs j\u00e1 criam esta classe quando cria-se o\nprojeto, mas no Netbeans 11 n\u00e3o temos esta op\u00e7\u00e3o, o Netbeans 8 cria\nautomaticamente esta classe.<\/p>\n\n\n\n<p>Vou clicar com o bot\u00e3o direito\ndo mouse sobre o pacote br.com.micheladrianomedeiros.ex1 e escolher\nNew-&gt;Java Class&#8230;, em Class Name: vou dar o nome de Start e clicar em\nFinish.<\/p>\n\n\n\n<p>Vou agora digitar o m\u00e9todo\nprincipal que todo programa Java deve ter que \u00e9 o m\u00e9todo public static void\nmain.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"338\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/4-5.png\" alt=\"\" class=\"wp-image-327\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/4-5.png 672w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/4-5-300x151.png 300w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><\/figure><\/div>\n\n\n\n<p>Agora vamos digitar um programa\ndentro do m\u00e9todo main para testar se o ambiente Java est\u00e1 instalado\ncorretamente.<\/p>\n\n\n\n<p>Vamos digitar simplesmente System.out.println(&#8220;Hello\nWorld&#8221;); esta mensagem ir\u00e1 aparecer no console do Netbeans.<\/p>\n\n\n\n<p>Quinto: executar o programa e\nver se deu tudo certo. Para executar basta clicar no bot\u00e3o play do Netbeans.\nVai aparecer uma janela para voc\u00ea dizer qual \u00e9 a classe principal do seu programa,\ns\u00f3 vai ter a Start escolha a op\u00e7\u00e3o Remember Permanently para que n\u00e3o apare\u00e7a\nmais esta janela.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"546\" height=\"429\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/5-5.png\" alt=\"\" class=\"wp-image-328\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/5-5.png 546w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/5-5-300x236.png 300w\" sizes=\"auto, (max-width: 546px) 100vw, 546px\" \/><\/figure><\/div>\n\n\n\n<p>Se deu tudo certo o Hello\nWorld ir\u00e1 aparecer no console do Netbeans. E assim voc\u00ea confirma que o ambiente\nest\u00e1 funcionando corretamente. Para voc\u00ea entender melhor como o Java funciona\nleia os artigos da certifica\u00e7\u00e3o Java <a href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/category\/java\/certificacao\/\">https:\/\/micheladrianomedeiros.com.br\/blog\/category\/java\/certificacao\/<\/a>\n<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"462\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/6-5.png\" alt=\"\" class=\"wp-image-329\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/6-5.png 574w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/6-5-300x241.png 300w\" sizes=\"auto, (max-width: 574px) 100vw, 574px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\"><strong>Adicionando Bibliotecas ao seu\nProjeto<\/strong><\/p>\n\n\n\n<p><strong>Problema<\/strong>: voc\u00ea\nquer adicionar bibliotecas de terceiro para utilizar no seu projeto, como por\nexemplo, a biblioteca do MySQL.<\/p>\n\n\n\n<p><strong>Solu\u00e7\u00e3o<\/strong>: se\nvoc\u00ea criou o projeto utilizando o Maven basta ir at\u00e9 o site <a href=\"https:\/\/mvnrepository.com\/\">https:\/\/mvnrepository.com\/<\/a> e na\nbuscar digitar mysql.<\/p>\n\n\n\n<p>Escolha a op\u00e7\u00e3o MySQL\nConnector\/J, agora clique na vers\u00e3o mais atual no meu caso foi a 8.0.17. Nesta\np\u00e1gina vai ter um c\u00f3digo para voc\u00ea adicionar no seu arquivo pom.xml, \u00e9 este\narquivo que controla as bibliotecas que ser\u00e3o adicionadas ao seu projeto. <\/p>\n\n\n\n<p>Caso voc\u00ea n\u00e3o tenha feito o\nprojeto com o Maven, voc\u00ea tem a op\u00e7\u00e3o de baixar o arquivo jar e adicionar ao\nseu projeto. A desvantagem de se fazer isto \u00e9 que algumas bibliotecas precisam\nde outras para funcionar, se voc\u00ea for adicionar todas desta maneira, mais para\nfrente voc\u00ea ter\u00e1 dificuldades se um dia precisar atualizar uma biblioteca, porque\nao atualizar uma biblioteca as que est\u00e3o ligada a ela talvez tamb\u00e9m precisem ser\natualizadas. O Maven faz toda esta verifica\u00e7\u00e3o e atualiza\u00e7\u00e3o automaticamente.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"797\" height=\"506\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/7-4.png\" alt=\"\" class=\"wp-image-330\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/7-4.png 797w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/7-4-300x190.png 300w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/7-4-768x488.png 768w\" sizes=\"auto, (max-width: 797px) 100vw, 797px\" \/><\/figure><\/div>\n\n\n\n<p>Vamos agora pegar este c\u00f3digo Maven\ne adicionar ao arquivo pom.xml.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"466\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/8-3.png\" alt=\"\" class=\"wp-image-331\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/8-3.png 700w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/8-3-300x200.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n\n<p>Execute o programa e o sistema\nir\u00e1 fazer o download da biblioteca do mysql que ser\u00e1 adicionada ao seu projeto.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"321\" src=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/9-3-1024x321.png\" alt=\"\" class=\"wp-image-332\" srcset=\"https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/9-3-1024x321.png 1024w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/9-3-300x94.png 300w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/9-3-768x240.png 768w, https:\/\/micheladrianomedeiros.com.br\/blog\/wp-content\/uploads\/2019\/07\/9-3.png 1265w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-color has-background has-very-light-gray-color has-vivid-cyan-blue-background-color\"><strong>Java 9 Recipes: A Problem-Solution Approach (English Edition)<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/amzn.to\/313UJeS\">https:\/\/amzn.to\/313UJeS<\/a><\/p>\n\n\n\n<p class=\"has-text-color has-background has-very-light-gray-color has-vivid-cyan-blue-background-color\">\u2764\ufe0f\u00a0<strong>Curso Java Para Iniciantes<\/strong>\u00a0\u00a0<\/p>\n\n\n\n<p>&gt;&gt;&gt;&nbsp;<a href=\"http:\/\/bit.ly\/java-swing\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/bit.ly\/java-swing<\/a>&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"has-text-color has-background has-very-light-gray-color has-vivid-cyan-blue-background-color\">\ud83d\udc4d<strong>\u00a0Curso de Desenvolvimento Web Completo\u00a0\u00a0<\/strong><\/p>\n\n\n\n<p>&gt;&gt;&gt;&nbsp;<a href=\"http:\/\/bit.ly\/2FnB5Sp\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/bit.ly\/2FnB5Sp<\/a>&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p>#java&nbsp;&nbsp;<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Criando um Ambiente de Desenvolvimento Problema: voc\u00ea quer instalar o Java para experimentar esta linguagem. Voc\u00ea tamb\u00e9m quer instalar uma IDE para utilizar o Java. Solu\u00e7\u00e3o: voc\u00ea vai ter que fazer o download do JDK e a IDE Netbeans a qual indico, mas h\u00e1 outras que voc\u00ea pode utilizar. Acesse o link https:\/\/micheladrianomedeiros.com.br\/blog\/desenvolvendo-jogos-com-java-1\/ neste artigo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":333,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[5],"class_list":["post-323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Como Resolver Problemas com Java #1 - Viciados em Aprender<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/micheladrianomedeiros.com.br\/blog\/como-resolver-problemas-com-java-1\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como Resolver Problemas com Java #1\" \/>\n<meta property=\"og:description\" content=\"Criando um Ambiente de Desenvolvimento Problema: voc\u00ea quer instalar o Java para experimentar esta linguagem. Voc\u00ea tamb\u00e9m quer instalar uma IDE para utilizar o Java. Solu\u00e7\u00e3o: voc\u00ea vai ter que fazer o download do JDK e a IDE Netbeans a qual indico, mas h\u00e1 outras que voc\u00ea pode utilizar. 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