{"id":17337,"date":"2022-10-24T04:50:16","date_gmt":"2022-10-23T23:20:16","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/"},"modified":"2022-10-24T04:50:16","modified_gmt":"2022-10-23T23:20:16","slug":"solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/","title":{"rendered":"[Solved] How to convert an array of numeric values as strings to an array of bytes?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-50681202\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"50681202\" data-parentid=\"50681108\" data-score=\"1\" 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>Do use <code>Byte.parseByte(String)<\/code> to do this:<\/p>\n<pre><code>public static byte[] toByteArray(String[] arr) {\n    byte[] res = new byte[arr.length];\n\n    for (int i = 0; i &lt; arr.length; i++)\n        res[i] = Byte.parseByte(arr[i]);\n\n    return res;\n}\n<\/code><\/pre>\n<p><strong>P.S.<\/strong><br \/>\nIn <code>Java<\/code> byte values are <strong>[-128; 128)<\/strong>. Therefore <code>\"128\"<\/code> will throw <code>java.lang.NumberFormatException: Value out of range. Value:\"128\" Radix:10<\/code>. The you have to decide what you want to do with those value: throw exception, because of invalid use data; or cast it to the closest byte value, like <code>\"128\" -&gt; 127<\/code>; or even ignore such values. Then this code could look like this:<\/p>\n<pre><code>public static byte[] toByteArray(String[] arr) {\n    byte[] res = new byte[arr.length];\n\n    for (int i = 0; i &lt; arr.length; i++) {\n        try {\n            res[i] = Byte.parseByte(arr[i]);    \n        } catch(Exception e) {\n            res[i] = \/\/ TODO action for incorrect value\n        }\n    }\n\n    return res;\n}\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">4<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to convert an array of numeric values as strings to an array of bytes? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Do use Byte.parseByte(String) to do this: public static byte[] toByteArray(String[] arr) { byte[] res = new byte[arr.length]; for (int i = 0; i &lt; arr.length; i++) res[i] = Byte.parseByte(arr[i]); return res; } P.S. In Java byte values are [-128; 128). Therefore &#8220;128&#8221; will throw java.lang.NumberFormatException: Value out of range. Value:&#8221;128&#8243; Radix:10. The you have &#8230; <a title=\"[Solved] How to convert an array of numeric values as strings to an array of bytes?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\" aria-label=\"More on [Solved] How to convert an array of numeric values as strings to an array of bytes?\">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-17337","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to convert an array of numeric values as strings to an array of bytes? - 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-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to convert an array of numeric values as strings to an array of bytes? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Do use Byte.parseByte(String) to do this: public static byte[] toByteArray(String[] arr) { byte[] res = new byte[arr.length]; for (int i = 0; i &lt; arr.length; i++) res[i] = Byte.parseByte(arr[i]); return res; } P.S. In Java byte values are [-128; 128). Therefore &quot;128&quot; will throw java.lang.NumberFormatException: Value out of range. Value:&quot;128&quot; Radix:10. The you have ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-23T23:20:16+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\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:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] How to convert an array of numeric values as strings to an array of bytes?\",\"datePublished\":\"2022-10-23T23:20:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\"},\"wordCount\":90,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"keywords\":[\"java\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/\",\"name\":\"[Solved] How to convert an array of numeric values as strings to an array of bytes? 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- JassWeb","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:\/\/jassweb.com\/solved\/solved-how-to-convert-an-array-of-numeric-values-as-strings-to-an-array-of-bytes\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] How to convert an array of numeric values as strings to an array of bytes? - JassWeb","og_description":"[ad_1] Do use Byte.parseByte(String) to do this: public static byte[] toByteArray(String[] arr) { byte[] res = new byte[arr.length]; for (int i = 0; i &lt; arr.length; i++) res[i] = Byte.parseByte(arr[i]); return res; } P.S. In Java byte values are [-128; 128). Therefore \"128\" will throw java.lang.NumberFormatException: Value out of range. Value:\"128\" Radix:10. The you have ... 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