{"id":23260,"date":"2024-03-16T01:05:47","date_gmt":"2024-03-16T01:05:47","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/"},"modified":"2024-03-22T00:50:36","modified_gmt":"2024-03-22T00:50:36","slug":"check-if-the-list-is-empty-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/","title":{"rendered":"Check if the list is empty in Java."},"content":{"rendered":"

In Java, you can use the following method to check if a list is empty:<\/p>\n

    \n
  1. The isEmpty() method can be used in list classes (like ArrayList, LinkedList, etc.) to check if the list is empty. For example:<\/li>\n<\/ol>\n
    List<String> list = new<\/span> ArrayList<\/span><>();\r\nif<\/span> (list.isEmpty()) {\r\n    System.out.println(\"\u5217\u8868\u4e3a\u7a7a\"<\/span>);\r\n} else<\/span> {\r\n    System.out.println(\"\u5217\u8868\u4e0d\u4e3a\u7a7a\"<\/span>);\r\n}\r\n<\/code><\/pre>\n
      \n
    1. By using the size() method: The size() method of the list class returns the number of elements in the list, and by checking if the count is zero, you can determine if the list is empty. For example:<\/li>\n<\/ol>\n
      List<String> list = new<\/span> ArrayList<\/span><>();\r\nif<\/span> (list.size() == 0<\/span>) {\r\n    System.out.println(\"\u5217\u8868\u4e3a\u7a7a\"<\/span>);\r\n} else<\/span> {\r\n    System.out.println(\"\u5217\u8868\u4e0d\u4e3a\u7a7a\"<\/span>);\r\n}\r\n<\/code><\/pre>\n
      Both methods can be used to determine if the list is empty, choose based on personal preference.<\/p>\n","protected":false},"excerpt":{"rendered":"
      In Java, you can use the following method to check if a list is empty: The isEmpty() method can be used in list classes (like ArrayList, LinkedList, etc.) to check if the list is empty. For example: List<String> list = new ArrayList<>(); if (list.isEmpty()) { System.out.println(“\u5217\u8868\u4e3a\u7a7a”); } else { System.out.println(“\u5217\u8868\u4e0d\u4e3a\u7a7a”); } By using the size() […]<\/p>\n","protected":false},"author":9,"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-23260","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nCheck if the list is empty 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\/check-if-the-list-is-empty-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Check if the list is empty in Java.\" \/>\n<meta property=\"og:description\" content=\"In Java, you can use the following method to check if a list is empty: The isEmpty() method can be used in list classes (like ArrayList, LinkedList, etc.) to check if the list is empty. For example: List<String> list = new ArrayList<>(); if (list.isEmpty()) { System.out.println("\u5217\u8868\u4e3a\u7a7a"); } else { System.out.println("\u5217\u8868\u4e0d\u4e3a\u7a7a"); } By using the size() […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-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=\"2024-03-16T01:05:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T00:50:36+00:00\" \/>\n<meta name=\"author\" content=\"Ava Mitchell\" \/>\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=\"Ava Mitchell\" \/>\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\/check-if-the-list-is-empty-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/\"},\"author\":{\"name\":\"Ava Mitchell\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/a3e2658c2cb9fb2be95ae0a8861f4a64\"},\"headline\":\"Check if the list is empty in Java.\",\"datePublished\":\"2024-03-16T01:05:47+00:00\",\"dateModified\":\"2024-03-22T00:50:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/\"},\"wordCount\":100,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/check-if-the-list-is-empty-in-java\/\",\"name\":\"Check if the list is empty in Java. - 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