{"id":6801,"date":"2022-09-05T05:26:14","date_gmt":"2022-09-04T23:56:14","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-check-a-string-for-white-spaces\/"},"modified":"2022-09-05T05:26:14","modified_gmt":"2022-09-04T23:56:14","slug":"solved-how-to-check-a-string-for-white-spaces","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-check-a-string-for-white-spaces\/","title":{"rendered":"[Solved] How to check a string for white spaces"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-22214366\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"22214366\" data-parentid=\"22214225\" 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>You can know how many <code>whitespaces<\/code> user entered by doing this:<\/p>\n<pre><code>Scanner sc = new Scanner(System.in);\nSystem.out.println(\"Enter word with white-spaces:\");\nString str = sc.nextLine();\nint totalSpace = str.split(\" \").length-1;\nSystem.out.println(\"total white-spaces is:\"+totalSpace);\n<\/code><\/pre>\n<p><strong>Edit:<\/strong> You can solve you problem by changing your <code>while<\/code> condition like this:<\/p>\n<pre><code> while(!(guessedSpaces.replaceAll(\"\\\\d\",\"\").length()==3 &amp;&amp; guessedSpaces.split(\" \").length-1==3)){\n    .....\n    .....\n    System.out.println(\"Enter word with white-spaces:\");\n    guessedSpaces = keyboard.nextLine();\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 check a string for white spaces <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You can know how many whitespaces user entered by doing this: Scanner sc = new Scanner(System.in); System.out.println(&#8220;Enter word with white-spaces:&#8221;); String str = sc.nextLine(); int totalSpace = str.split(&#8221; &#8220;).length-1; System.out.println(&#8220;total white-spaces is:&#8221;+totalSpace); Edit: You can solve you problem by changing your while condition like this: while(!(guessedSpaces.replaceAll(&#8220;\\\\d&#8221;,&#8221;&#8221;).length()==3 &amp;&amp; guessedSpaces.split(&#8221; &#8220;).length-1==3)){ &#8230;.. &#8230;.. System.out.println(&#8220;Enter word with &#8230; <a title=\"[Solved] How to check a string for white spaces\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-check-a-string-for-white-spaces\/\" aria-label=\"More on [Solved] How to check a string for white spaces\">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":[323,1903],"class_list":["post-6801","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java","tag-space"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to check a string for white spaces - 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-check-a-string-for-white-spaces\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to check a string for white spaces - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You can know how many whitespaces user entered by doing this: Scanner sc = new Scanner(System.in); System.out.println(&quot;Enter word with white-spaces:&quot;); String str = sc.nextLine(); int totalSpace = str.split(&quot; &quot;).length-1; System.out.println(&quot;total white-spaces is:&quot;+totalSpace); Edit: You can solve you problem by changing your while condition like this: while(!(guessedSpaces.replaceAll(&quot;\\d&quot;,&quot;&quot;).length()==3 &amp;&amp; guessedSpaces.split(&quot; &quot;).length-1==3)){ ..... ..... System.out.println(&quot;Enter word with ... 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System.out.println(\"Enter word with white-spaces:\"); String str = sc.nextLine(); int totalSpace = str.split(\" \").length-1; System.out.println(\"total white-spaces is:\"+totalSpace); Edit: You can solve you problem by changing your while condition like this: while(!(guessedSpaces.replaceAll(\"\\d\",\"\").length()==3 &amp;&amp; guessedSpaces.split(\" \").length-1==3)){ ..... ..... System.out.println(\"Enter word with ... 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