{"id":20449,"date":"2024-03-15T20:29:50","date_gmt":"2024-03-15T20:29:50","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-swap-the-positions-of-java-strings-in-front-and-back\/"},"modified":"2024-03-21T18:07:10","modified_gmt":"2024-03-21T18:07:10","slug":"how-to-swap-the-positions-of-java-strings-in-front-and-back","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-swap-the-positions-of-java-strings-in-front-and-back\/","title":{"rendered":"How to swap the positions of Java strings in front and back?"},"content":{"rendered":"<p>To switch the positions of the beginning and end of a Java string, you can use the substring method and string concatenation.<\/p>\n<p>The specific steps are as follows:<\/p>\n<ol>\n<li>Firstly, you can obtain the length of a string by using the length() method.<\/li>\n<li>Using the substring method, obtain the first half and second half of the string separately. The starting position for the first half is 0, and the ending position is half of the string&#8217;s length; the starting position for the second half is the string&#8217;s length divided by two, and the ending position is the length of the string.<\/li>\n<li>Concatenate the first half and the second half to get the string after swapping positions.<\/li>\n<\/ol>\n<p>Here is the sample code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">str<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"Hello World!\"<\/span>;\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">length<\/span> <span class=\"hljs-operator\">=<\/span> str.length();\r\n        \r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">front<\/span> <span class=\"hljs-operator\">=<\/span> str.substring(<span class=\"hljs-number\">0<\/span>, length \/ <span class=\"hljs-number\">2<\/span>);\r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">back<\/span> <span class=\"hljs-operator\">=<\/span> str.substring(length \/ <span class=\"hljs-number\">2<\/span>, length);\r\n        \r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">result<\/span> <span class=\"hljs-operator\">=<\/span> back + front;\r\n        System.out.println(result);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>The code above will output: &#8220;World!Hello &#8220;<\/p>\n<p>Please note that Java strings are immutable, therefore the operations above will not change the original string&#8217;s value but instead return a new string. If you want to modify the original string, you can use the StringBuilder or StringBuffer class for operations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To switch the positions of the beginning and end of a Java string, you can use the substring method and string concatenation. The specific steps are as follows: Firstly, you can obtain the length of a string by using the length() method. Using the substring method, obtain the first half and second half of the [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-20449","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to swap the positions of Java strings in front and back? - Blog - Silicon Cloud<\/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:\/\/www.silicloud.com\/blog\/how-to-swap-the-positions-of-java-strings-in-front-and-back\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to swap the positions of Java strings in front and back?\" \/>\n<meta property=\"og:description\" content=\"To switch the positions of the beginning and end of a Java string, you can use the substring method and string concatenation. 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