{"id":8566,"date":"2022-09-14T09:11:17","date_gmt":"2022-09-14T03:41:17","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-numberformatexception-error-from-reading-a-file\/"},"modified":"2022-09-14T09:11:17","modified_gmt":"2022-09-14T03:41:17","slug":"solved-numberformatexception-error-from-reading-a-file","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-numberformatexception-error-from-reading-a-file\/","title":{"rendered":"[Solved] NumberFormatException error from reading a file"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-38909559\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"38909559\" data-parentid=\"38909437\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" 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>Ok, I think converting string into Integer and then typecasting it to double is causing the error. Why don&#8217;t you just convert the string to double.<br \/>\nAlso you must trim the line while reading it to avoid any spaces.<\/p>\n<pre><code>    String holderStr = br.readLine().trim();\n    System.out.println(holderStr);\n\n    totalBalNum = Double.parseDouble(holderStr);\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">2<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved NumberFormatException error from reading a file <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Ok, I think converting string into Integer and then typecasting it to double is causing the error. Why don&#8217;t you just convert the string to double. Also you must trim the line while reading it to avoid any spaces. String holderStr = br.readLine().trim(); System.out.println(holderStr); totalBalNum = Double.parseDouble(holderStr); 2 [ad_2] solved NumberFormatException error from reading &#8230; <a title=\"[Solved] NumberFormatException error from reading a file\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-numberformatexception-error-from-reading-a-file\/\" aria-label=\"More on [Solved] NumberFormatException error from reading a file\">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":[2431,323,1540],"class_list":["post-8566","post","type-post","status-publish","format-standard","hentry","category-solved","tag-filereader","tag-java","tag-numberformatexception"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] NumberFormatException error from reading a file - 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-numberformatexception-error-from-reading-a-file\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] NumberFormatException error from reading a file - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Ok, I think converting string into Integer and then typecasting it to double is causing the error. Why don&#8217;t you just convert the string to double. Also you must trim the line while reading it to avoid any spaces. String holderStr = br.readLine().trim(); System.out.println(holderStr); totalBalNum = Double.parseDouble(holderStr); 2 [ad_2] solved NumberFormatException error from reading ... 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