{"id":18411,"date":"2022-10-31T14:36:04","date_gmt":"2022-10-31T09:06:04","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-incomparable-types-string-and-class-name\/"},"modified":"2022-10-31T14:36:04","modified_gmt":"2022-10-31T09:06:04","slug":"solved-incomparable-types-string-and-class-name","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-incomparable-types-string-and-class-name\/","title":{"rendered":"[Solved] Incomparable types: String and class name"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-42864833\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"42864833\" data-parentid=\"42864606\" data-score=\"3\" data-position-on-page=\"2\" data-highest-scored=\"0\" data-question-has-accepted-highest-score=\"0\" itemprop=\"suggestedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>I&#8217;m guessing the error is thrown at this line <\/p>\n<pre><code> if(cari == buku1.Perpus[1])\n<\/code><\/pre>\n<p>Since you&#8217;re comparing a String to a Perpus object in your array here. <\/p>\n<p>You need to add some getter methods to your class, so that you can compare Strings in your array elements to the String cari.<\/p>\n<p>Eg:<\/p>\n<pre><code>class perpus {\n    private String penulis;\n    private String namaBuku;\n    private String kategori; \n\n    String getPenulis()\n    {\n    return penulis;\n    }\n    \/\/insert other class members here\n\n    }\n<\/code><\/pre>\n<p>Then:<\/p>\n<pre><code>if(cari.equals(buku1.Perpus[1].getPenulis()))\n\/\/do whatever\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Incomparable types: String and class name <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] I&#8217;m guessing the error is thrown at this line if(cari == buku1.Perpus[1]) Since you&#8217;re comparing a String to a Perpus object in your array here. You need to add some getter methods to your class, so that you can compare Strings in your array elements to the String cari. Eg: class perpus { private &#8230; <a title=\"[Solved] Incomparable types: String and class name\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-incomparable-types-string-and-class-name\/\" aria-label=\"More on [Solved] Incomparable types: String and class name\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323],"class_list":["post-18411","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] Incomparable types: String and class name - JassWeb<\/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:\/\/jassweb.com\/solved\/solved-incomparable-types-string-and-class-name\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Incomparable types: String and class name - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I&#8217;m guessing the error is thrown at this line if(cari == buku1.Perpus[1]) Since you&#8217;re comparing a String to a Perpus object in your array here. You need to add some getter methods to your class, so that you can compare Strings in your array elements to the String cari. Eg: class perpus { private ... 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You need to add some getter methods to your class, so that you can compare Strings in your array elements to the String cari. Eg: class perpus { private ... 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