{"id":23,"date":"2025-02-04T04:44:15","date_gmt":"2025-02-04T04:44:15","guid":{"rendered":"https:\/\/techkubo.com\/java\/?p=23"},"modified":"2025-06-07T20:48:12","modified_gmt":"2025-06-07T20:48:12","slug":"java-comments","status":"publish","type":"post","link":"https:\/\/techkubo.com\/java\/java-comments\/","title":{"rendered":"Java Comments"},"content":{"rendered":"\n<p>In this lesson, we will explore how to use comments in Java to explain and make code more readable. Comments can also be used to prevent code execution when testing alternative implementations.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Single-line Comments<\/h2>\n\n\n\n<p>Single-line comments start with two forward slashes (<code>\/\/<\/code>). Any text between <code>\/\/<\/code> and the end of the line is ignored by Java (will not be executed).<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;htmlmixed&quot;,&quot;mime&quot;:&quot;text\/html&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;JAVA&quot;,&quot;language&quot;:&quot;HTML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;html&quot;}\">\/\/ This is a single-line comment\nSystem.out.println(&quot;Hello, Java&quot;);<\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>You can also place a single-line comment at the end of a line of code.<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;htmlmixed&quot;,&quot;mime&quot;:&quot;text\/html&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;JAVA&quot;,&quot;language&quot;:&quot;HTML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;html&quot;}\">System.out.println(&quot;Hello, Java&quot;); \/\/ This is a single-line comment<\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Multi-line Comments<\/h2>\n\n\n\n<p>Multi-line comments start with <code>\/*<\/code> and end with <code>*\/<\/code>. Any text between <code>\/*<\/code> and <code>*\/<\/code> will be ignored by Java.<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;htmlmixed&quot;,&quot;mime&quot;:&quot;text\/html&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;JAVA&quot;,&quot;language&quot;:&quot;HTML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;html&quot;}\">\/* This is a multi-line comment\n   that spans multiple lines *\/\nSystem.out.println(&quot;Hello, Java&quot;);<\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>Multi-line comments are useful for providing more detailed explanations or temporarily disabling blocks of code during testing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Choosing Between Single-line and Multi-line Comments<\/h2>\n\n\n\n<p>It is up to the developer to choose between single-line and multi-line comments. Typically, single-line comments (<code>\/\/<\/code>) are used for brief comments, while multi-line comments (<code>\/* *\/<\/code>) are used for longer descriptions.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Additional Information<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Documentation Comments:<\/strong> Java also supports documentation comments, which are multi-line comments that start with <code>\/**<\/code> and end with <code>*\/<\/code>. These comments are used to generate documentation using the Javadoc tool. <br><br><strong>Example:<\/strong><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;htmlmixed&quot;,&quot;mime&quot;:&quot;text\/html&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;JAVA&quot;,&quot;language&quot;:&quot;HTML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;html&quot;}\">  \/**\n   * This is a documentation comment\n   * It provides information about the class or method\n   *\/\n  public class Example {\n    public static void main(String[] args) {\n      System.out.println(&quot;Hello, Java&quot;);\n    }\n  }<\/pre><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this lesson, we will explore how to use comments in Java to explain and make code more readable. Comments [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-23","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java Comments - Java Tutorial<\/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:\/\/techkubo.com\/java\/java-comments\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java Comments - Java Tutorial\" \/>\n<meta property=\"og:description\" content=\"In this lesson, we will explore how to use comments in Java to explain and make code more readable. Comments [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/techkubo.com\/java\/java-comments\/\" \/>\n<meta property=\"og:site_name\" content=\"Java Tutorial\" \/>\n<meta property=\"article:published_time\" content=\"2025-02-04T04:44:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-07T20:48:12+00:00\" \/>\n<meta name=\"author\" content=\"Manong\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Manong\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/\"},\"author\":{\"name\":\"Manong\",\"@id\":\"https:\/\/techkubo.com\/java\/#\/schema\/person\/b4fa2f01fa4ff2a4e98276ce47115965\"},\"headline\":\"Java Comments\",\"datePublished\":\"2025-02-04T04:44:15+00:00\",\"dateModified\":\"2025-06-07T20:48:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/\"},\"wordCount\":179,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/techkubo.com\/java\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/techkubo.com\/java\/java-comments\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/\",\"url\":\"https:\/\/techkubo.com\/java\/java-comments\/\",\"name\":\"Java Comments - Java Tutorial\",\"isPartOf\":{\"@id\":\"https:\/\/techkubo.com\/java\/#website\"},\"datePublished\":\"2025-02-04T04:44:15+00:00\",\"dateModified\":\"2025-06-07T20:48:12+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/techkubo.com\/java\/java-comments\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/techkubo.com\/java\/java-comments\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/techkubo.com\/java\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Java Comments\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/techkubo.com\/java\/#website\",\"url\":\"https:\/\/techkubo.com\/java\/\",\"name\":\"Java Tutorial\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/techkubo.com\/java\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/techkubo.com\/java\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/techkubo.com\/java\/#organization\",\"name\":\"Java Tutorial\",\"url\":\"https:\/\/techkubo.com\/java\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/techkubo.com\/java\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/techkubo.com\/java\/wp-content\/uploads\/sites\/11\/2025\/04\/cropped-TechKubo-Logo-PNG.png\",\"contentUrl\":\"https:\/\/techkubo.com\/java\/wp-content\/uploads\/sites\/11\/2025\/04\/cropped-TechKubo-Logo-PNG.png\",\"width\":300,\"height\":220,\"caption\":\"Java Tutorial\"},\"image\":{\"@id\":\"https:\/\/techkubo.com\/java\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/techkubo.com\/java\/#\/schema\/person\/b4fa2f01fa4ff2a4e98276ce47115965\",\"name\":\"Manong\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/techkubo.com\/java\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/21a7455736c21887b8fefe0935012d65?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/21a7455736c21887b8fefe0935012d65?s=96&d=mm&r=g\",\"caption\":\"Manong\"},\"sameAs\":[\"https:\/\/techkubo.com\"],\"url\":\"https:\/\/techkubo.com\/java\/author\/manong\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Java Comments - Java Tutorial","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/techkubo.com\/java\/java-comments\/","og_locale":"en_US","og_type":"article","og_title":"Java Comments - Java Tutorial","og_description":"In this lesson, we will explore how to use comments in Java to explain and make code more readable. Comments [&hellip;]","og_url":"https:\/\/techkubo.com\/java\/java-comments\/","og_site_name":"Java Tutorial","article_published_time":"2025-02-04T04:44:15+00:00","article_modified_time":"2025-06-07T20:48:12+00:00","author":"Manong","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Manong","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/techkubo.com\/java\/java-comments\/#article","isPartOf":{"@id":"https:\/\/techkubo.com\/java\/java-comments\/"},"author":{"name":"Manong","@id":"https:\/\/techkubo.com\/java\/#\/schema\/person\/b4fa2f01fa4ff2a4e98276ce47115965"},"headline":"Java Comments","datePublished":"2025-02-04T04:44:15+00:00","dateModified":"2025-06-07T20:48:12+00:00","mainEntityOfPage":{"@id":"https:\/\/techkubo.com\/java\/java-comments\/"},"wordCount":179,"commentCount":0,"publisher":{"@id":"https:\/\/techkubo.com\/java\/#organization"},"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/techkubo.com\/java\/java-comments\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/techkubo.com\/java\/java-comments\/","url":"https:\/\/techkubo.com\/java\/java-comments\/","name":"Java Comments - Java Tutorial","isPartOf":{"@id":"https:\/\/techkubo.com\/java\/#website"},"datePublished":"2025-02-04T04:44:15+00:00","dateModified":"2025-06-07T20:48:12+00:00","breadcrumb":{"@id":"https:\/\/techkubo.com\/java\/java-comments\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/techkubo.com\/java\/java-comments\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/techkubo.com\/java\/java-comments\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/techkubo.com\/java\/"},{"@type":"ListItem","position":2,"name":"Java Comments"}]},{"@type":"WebSite","@id":"https:\/\/techkubo.com\/java\/#website","url":"https:\/\/techkubo.com\/java\/","name":"Java Tutorial","description":"","publisher":{"@id":"https:\/\/techkubo.com\/java\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/techkubo.com\/java\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/techkubo.com\/java\/#organization","name":"Java Tutorial","url":"https:\/\/techkubo.com\/java\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/techkubo.com\/java\/#\/schema\/logo\/image\/","url":"https:\/\/techkubo.com\/java\/wp-content\/uploads\/sites\/11\/2025\/04\/cropped-TechKubo-Logo-PNG.png","contentUrl":"https:\/\/techkubo.com\/java\/wp-content\/uploads\/sites\/11\/2025\/04\/cropped-TechKubo-Logo-PNG.png","width":300,"height":220,"caption":"Java Tutorial"},"image":{"@id":"https:\/\/techkubo.com\/java\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/techkubo.com\/java\/#\/schema\/person\/b4fa2f01fa4ff2a4e98276ce47115965","name":"Manong","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/techkubo.com\/java\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/21a7455736c21887b8fefe0935012d65?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/21a7455736c21887b8fefe0935012d65?s=96&d=mm&r=g","caption":"Manong"},"sameAs":["https:\/\/techkubo.com"],"url":"https:\/\/techkubo.com\/java\/author\/manong\/"}]}},"_links":{"self":[{"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/posts\/23"}],"collection":[{"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/comments?post=23"}],"version-history":[{"count":2,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/posts\/23\/revisions"}],"predecessor-version":[{"id":162,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/posts\/23\/revisions\/162"}],"wp:attachment":[{"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/media?parent=23"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/categories?post=23"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techkubo.com\/java\/wp-json\/wp\/v2\/tags?post=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}