{"id":6794,"date":"2024-03-14T04:41:29","date_gmt":"2024-03-14T04:41:29","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-difference-between-startswith-and-substring-in-java\/"},"modified":"2025-08-02T08:15:13","modified_gmt":"2025-08-02T08:15:13","slug":"what-is-the-difference-between-startswith-and-substring-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-difference-between-startswith-and-substring-in-java\/","title":{"rendered":"Java startsWith() vs substring(): Key Differences"},"content":{"rendered":"<p>startsWith() and substring() are two methods used for manipulating strings in Java.<\/p>\n<p>The startsWith() method is used to check if a string begins with a specified prefix. It returns true if it does, otherwise it returns false. Its usage is as follows:<\/p>\n<pre class=\"post-pre\"><code><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\">boolean<\/span> <span class=\"hljs-variable\">result<\/span> <span class=\"hljs-operator\">=<\/span> str.startsWith(<span class=\"hljs-string\">\"Hello\"<\/span>);\r\nSystem.out.println(result); <span class=\"hljs-comment\">\/\/ true<\/span>\r\n<\/code><\/pre>\n<p>The substring() method is used to extract a portion of a string by specifying the starting and ending positions. The syntax is as follows:<\/p>\n<pre class=\"post-pre\"><code><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\">String<\/span> <span class=\"hljs-variable\">subStr<\/span> <span class=\"hljs-operator\">=<\/span> str.substring(<span class=\"hljs-number\">6<\/span>); <span class=\"hljs-comment\">\/\/ \u4ece\u4f4d\u7f6e6\u5f00\u59cb\u622a\u53d6\u5230\u672b\u5c3e<\/span>\r\nSystem.out.println(subStr); <span class=\"hljs-comment\">\/\/ World<\/span>\r\n\r\n<span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">subStr2<\/span> <span class=\"hljs-operator\">=<\/span> str.substring(<span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">5<\/span>); <span class=\"hljs-comment\">\/\/ \u4ece\u4f4d\u7f6e0\u5f00\u59cb\u622a\u53d6\u5230\u4f4d\u7f6e5\uff08\u4e0d\u5305\u62ec5\uff09<\/span>\r\nSystem.out.println(subStr2); <span class=\"hljs-comment\">\/\/ Hello<\/span>\r\n<\/code><\/pre>\n<p>Therefore, startsWith() is primarily used to check if a string&#8217;s prefix matches, while substring() is mainly used to retrieve a substring of a string. They have distinct differences in functionality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>startsWith() and substring() are two methods used for manipulating strings in Java. The startsWith() method is used to check if a string begins with a specified prefix. It returns true if it does, otherwise it returns false. Its usage is as follows: String str = &#8220;Hello World&#8221;; boolean result = str.startsWith(&#8220;Hello&#8221;); System.out.println(result); \/\/ true The [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[87,180,8433,184,275],"class_list":["post-6794","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-java","tag-java-programming","tag-startswith","tag-string-methods","tag-substring"],"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>Java startsWith() vs substring(): Key Differences - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn the key differences between Java&#039;s startsWith() and substring() methods with practical examples.\" \/>\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\/what-is-the-difference-between-startswith-and-substring-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java startsWith() vs substring(): Key Differences\" \/>\n<meta property=\"og:description\" content=\"Learn the key differences between Java&#039;s startsWith() and substring() methods with practical examples.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-is-the-difference-between-startswith-and-substring-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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