{"id":16371,"date":"2022-10-15T09:47:26","date_gmt":"2022-10-15T04:17:26","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-java-reading-a-file-into-a-list\/"},"modified":"2022-10-15T09:47:26","modified_gmt":"2022-10-15T04:17:26","slug":"solved-java-reading-a-file-into-a-list","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-java-reading-a-file-into-a-list\/","title":{"rendered":"[Solved] Java reading a file into a list"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-50955635\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"50955635\" data-parentid=\"50954905\" 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>There are a decent amount of ways to accomplish what you are asking, but here is one way to read a file into a program and split each line by specific delimiters into a list, while still keeping the delimiters in the sentence.<\/p>\n<p>All of the functionality for turning a file to a list based on multiple delimiters can be found in the turnSentencesToList() method<\/p>\n<p>In my example below I split by: <strong>! . ?<\/strong><\/p>\n<pre><code>import java.io.File;\nimport java.io.FileNotFoundException;\nimport java.util.LinkedList;\nimport java.util.List;\nimport java.util.Scanner;\nimport java.util.regex.Matcher;\nimport java.util.regex.Pattern;\n\npublic class Test{\n    \n    public static void main(String [] args){\n        LinkedList&lt;String&gt; list = turnSentencesToList(\"sampleFile.txt\");\n        \n        for(String s: list)\n            System.out.println(s);  \n    }\n    \n    private static LinkedList&lt;String&gt; turnSentencesToList(String fileName) {\n        LinkedList&lt;String&gt; list = new LinkedList&lt;&gt;();\n        String regex = \"\\\\.|!|\\\\?\";\n        \n        File file = new File(fileName);\n        Scanner scan = null;\n        try {\n            scan = new Scanner(file);\n            while(scan.hasNextLine()){\n                String line = scan.nextLine().trim();\n                \n                String[] sentences = null;\n                \/\/we don't need empty lines\n                if(!line.equals(\"\")) {\n                    \/\/splits by . or ! or ?\n                    sentences = line.split(\"\\\\.|!|\\\\?\");\n                    \n                    \/\/gather delims because split() removes them\n                    List&lt;String&gt; delims = getDelimiters(line, regex);\n                    \n                    if(sentences!=null) {\n                        int count = 0;\n                        for(String s: sentences) {\n                            list.add(s.trim()+delims.get(count));\n                            count++;\n                        }\n                    }\n                }\n            }\n        } catch (FileNotFoundException e) {\n            e.printStackTrace();\n            return null;\n        }finally {\n            if(scan!=null)\n                scan.close();\n        }\n        return list;\n    }\n    \n    \n     private static List&lt;String&gt; getDelimiters(String line, String regex) {\n         \/\/this method is used to provide a list of all found delimiters in a line\n         List&lt;String&gt; allDelims = new LinkedList&lt;String&gt;();\n         Pattern pattern = Pattern.compile(regex);\n         Matcher matcher = pattern.matcher(line);\n    \n         String delim = null;\n         while(matcher.find()) {\n             delim = matcher.group();\n             allDelims.add(delim);\n         }\n            \n         return allDelims;     \n    }\n}\n<\/code><\/pre>\n<p><strong>Based on your example input file, the produced output would be:<\/strong><\/p>\n<blockquote>\n<p>Sample textfile!<\/p>\n<p>A man, l, a ballot, a catnip, a pooh, a rail, a calamus, a dairyman, a bater, a canal &#8211; Panama!<\/p>\n<p>This is a sentence!<\/p>\n<p>This one also.<\/p>\n<p>Heres another one?<\/p>\n<p>Yes another one.<\/p>\n<\/blockquote><\/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 Java reading a file into a list <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] There are a decent amount of ways to accomplish what you are asking, but here is one way to read a file into a program and split each line by specific delimiters into a list, while still keeping the delimiters in the sentence. All of the functionality for turning a file to a list &#8230; <a title=\"[Solved] Java reading a file into a list\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-java-reading-a-file-into-a-list\/\" aria-label=\"More on [Solved] Java reading a file into a list\">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":[2581,1148,323,540],"class_list":["post-16371","post","type-post","status-publish","format-standard","hentry","category-solved","tag-delimiter","tag-input","tag-java","tag-list"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Java reading a file into a list - 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-java-reading-a-file-into-a-list\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Java reading a file into a list - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] There are a decent amount of ways to accomplish what you are asking, but here is one way to read a file into a program and split each line by specific delimiters into a list, while still keeping the delimiters in the sentence. 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