{"id":26953,"date":"2024-03-16T07:38:15","date_gmt":"2024-03-16T07:38:15","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/"},"modified":"2024-03-22T09:50:41","modified_gmt":"2024-03-22T09:50:41","slug":"how-to-use-the-throws-keyword-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/","title":{"rendered":"How to use the &#8220;throws&#8221; keyword in Java?"},"content":{"rendered":"<p>In Java, the &#8220;throws&#8221; keyword is used in a method signature to declare possible exceptions that can be thrown, allowing the calling code to catch and handle the exception. If a method declares a &#8220;throws&#8221; clause for a possible exception but does not actually catch and handle it, then the exception will be propagated to the method that called it.<\/p>\n<p>Here is an example of using the &#8216;throws&#8217; keyword in Java to declare and handle exceptions.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u58f0\u660e\u4e00\u4e2a\u65b9\u6cd5\u53ef\u80fd\u629b\u51fa\u5f02\u5e38<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">method1<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-keyword\">throws<\/span> Exception {\r\n    <span class=\"hljs-comment\">\/\/ ...<\/span>\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5728\u8c03\u7528\u65b9\u6cd5\u7684\u4ee3\u7801\u4e2d\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">method2<\/span><span class=\"hljs-params\">()<\/span> {\r\n    <span class=\"hljs-keyword\">try<\/span> {\r\n        method1();\r\n    } <span class=\"hljs-keyword\">catch<\/span> (Exception e) {\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u5f02\u5e38<\/span>\r\n    }\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5728\u8c03\u7528\u65b9\u6cd5\u7684\u4ee3\u7801\u4e2d\u7ee7\u7eed\u629b\u51fa\u5f02\u5e38<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">method3<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-keyword\">throws<\/span> Exception {\r\n    method1();\r\n}\r\n<\/code><\/pre>\n<p>\nIn the declaration of method1, use the throws keyword to specify the types of exceptions that may be thrown. In method2, we call method1 and catch and handle any potential exceptions using a try-catch block. In method3, we simply continue to throw the exception without handling it.<\/p>\n<p>Please note that if a method declares a throws clause, the calling method must either catch and handle the exception or continue to throw it. Otherwise, the code will not compile.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, the &#8220;throws&#8221; keyword is used in a method signature to declare possible exceptions that can be thrown, allowing the calling code to catch and handle the exception. If a method declares a &#8220;throws&#8221; clause for a possible exception but does not actually catch and handle it, then the exception will be propagated to [&hellip;]<\/p>\n","protected":false},"author":7,"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-26953","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 use the &quot;throws&quot; keyword in Java? - 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-use-the-throws-keyword-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to use the &quot;throws&quot; keyword in Java?\" \/>\n<meta property=\"og:description\" content=\"In Java, the &#8220;throws&#8221; keyword is used in a method signature to declare possible exceptions that can be thrown, allowing the calling code to catch and handle the exception. If a method declares a &#8220;throws&#8221; clause for a possible exception but does not actually catch and handle it, then the exception will be propagated to [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T07:38:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T09:50:41+00:00\" \/>\n<meta name=\"author\" content=\"Sophia Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sophia Anderson\" \/>\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:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\"},\"author\":{\"name\":\"Sophia Anderson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\"},\"headline\":\"How to use the &#8220;throws&#8221; keyword in Java?\",\"datePublished\":\"2024-03-16T07:38:15+00:00\",\"dateModified\":\"2024-03-22T09:50:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\"},\"wordCount\":162,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\",\"name\":\"How to use the \\\"throws\\\" keyword in Java? - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\"},\"datePublished\":\"2024-03-16T07:38:15+00:00\",\"dateModified\":\"2024-03-22T09:50:41+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.silicloud.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to use the &#8220;throws&#8221; keyword in Java?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"name\":\"Silicon Cloud Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\",\"name\":\"Silicon Cloud Blog\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"contentUrl\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"width\":1024,\"height\":1024,\"caption\":\"Silicon Cloud Blog\"},\"image\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\",\"https:\/\/twitter.com\/SiliCloudGlobal\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\",\"name\":\"Sophia Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g\",\"caption\":\"Sophia Anderson\"},\"url\":\"https:\/\/www.silicloud.com\/blog\/author\/sophiaanderson\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How to use the \"throws\" keyword in Java? - Blog - Silicon Cloud","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:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/","og_locale":"en_US","og_type":"article","og_title":"How to use the \"throws\" keyword in Java?","og_description":"In Java, the &#8220;throws&#8221; keyword is used in a method signature to declare possible exceptions that can be thrown, allowing the calling code to catch and handle the exception. If a method declares a &#8220;throws&#8221; clause for a possible exception but does not actually catch and handle it, then the exception will be propagated to [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-16T07:38:15+00:00","article_modified_time":"2024-03-22T09:50:41+00:00","author":"Sophia Anderson","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Sophia Anderson","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/"},"author":{"name":"Sophia Anderson","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30"},"headline":"How to use the &#8220;throws&#8221; keyword in Java?","datePublished":"2024-03-16T07:38:15+00:00","dateModified":"2024-03-22T09:50:41+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/"},"wordCount":162,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/","url":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/","name":"How to use the \"throws\" keyword in Java? - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/#website"},"datePublished":"2024-03-16T07:38:15+00:00","dateModified":"2024-03-22T09:50:41+00:00","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-throws-keyword-in-java\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.silicloud.com\/blog\/"},{"@type":"ListItem","position":2,"name":"How to use the &#8220;throws&#8221; keyword in Java?"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/blog\/#website","url":"https:\/\/www.silicloud.com\/blog\/","name":"Silicon Cloud Blog","description":"","publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.silicloud.com\/blog\/#organization","name":"Silicon Cloud Blog","url":"https:\/\/www.silicloud.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","contentUrl":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","width":1024,"height":1024,"caption":"Silicon Cloud Blog"},"image":{"@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/SiliCloudGlobal\/","https:\/\/twitter.com\/SiliCloudGlobal"]},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30","name":"Sophia Anderson","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g","caption":"Sophia Anderson"},"url":"https:\/\/www.silicloud.com\/blog\/author\/sophiaanderson\/"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/26953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/comments?post=26953"}],"version-history":[{"count":1,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/26953\/revisions"}],"predecessor-version":[{"id":61152,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/26953\/revisions\/61152"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/media?parent=26953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/categories?post=26953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/tags?post=26953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}