In Java, you can use the ArrayList class to define dynamic arrays. The ArrayList class is one implementation in the Java collection framework that allows for resizing arrays dynamically.<\/p>\n
Below is an example of defining a dynamic array:<\/p>\n
import java.util.ArrayList;\r\n\r\npublic class DynamicArrayExample {\r\n public static void main(String[] args) {\r\n \/\/ \u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\r\n ArrayList<Integer> dynamicArray = new ArrayList<>();\r\n\r\n \/\/ \u6dfb\u52a0\u5143\u7d20\u5230\u52a8\u6001\u6570\u7ec4\r\n dynamicArray.add(1);\r\n dynamicArray.add(2);\r\n dynamicArray.add(3);\r\n\r\n \/\/ \u83b7\u53d6\u52a8\u6001\u6570\u7ec4\u7684\u957f\u5ea6\r\n int length = dynamicArray.size();\r\n System.out.println(\"\u52a8\u6001\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\uff1a\" + length);\r\n\r\n \/\/ \u83b7\u53d6\u52a8\u6001\u6570\u7ec4\u7684\u5143\u7d20\r\n int firstElement = dynamicArray.get(0);\r\n System.out.println(\"\u7b2c\u4e00\u4e2a\u5143\u7d20\u4e3a\uff1a\" + firstElement);\r\n\r\n \/\/ \u4fee\u6539\u52a8\u6001\u6570\u7ec4\u7684\u5143\u7d20\r\n dynamicArray.set(1, 4);\r\n System.out.println(\"\u4fee\u6539\u540e\u7684\u52a8\u6001\u6570\u7ec4\u4e3a\uff1a\" + dynamicArray);\r\n\r\n \/\/ \u5220\u9664\u52a8\u6001\u6570\u7ec4\u7684\u5143\u7d20\r\n dynamicArray.remove(2);\r\n System.out.println(\"\u5220\u9664\u540e\u7684\u52a8\u6001\u6570\u7ec4\u4e3a\uff1a\" + dynamicArray);\r\n }\r\n}\r\n<\/code><\/pre>\nIn the example above, we use an ArrayList to define a dynamic array. We add elements by calling the add() method, get the length of the dynamic array by calling the size() method, retrieve elements by calling the get() method, modify elements by calling the set() method, and delete elements by calling the remove() method.<\/p>\n","protected":false},"excerpt":{"rendered":"
In Java, you can use the ArrayList class to define dynamic arrays. The ArrayList class is one implementation in the Java collection framework that allows for resizing arrays dynamically. Below is an example of defining a dynamic array: import java.util.ArrayList; public class DynamicArrayExample { public static void main(String[] args) { \/\/ \u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4 ArrayList<Integer> dynamicArray = […]<\/p>\n","protected":false},"author":13,"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-24518","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
How to define dynamic arrays 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-define-dynamic-arrays-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 define dynamic arrays in Java\" \/>\n<meta property=\"og:description\" content=\"In Java, you can use the ArrayList class to define dynamic arrays. The ArrayList class is one implementation in the Java collection framework that allows for resizing arrays dynamically. Below is an example of defining a dynamic array: import java.util.ArrayList; public class DynamicArrayExample { public static void main(String[] args) { \/\/ \u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4 ArrayList<Integer> dynamicArray = […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-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=\"2024-03-16T03:19:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T03:55:53+00:00\" \/>\n<meta name=\"author\" content=\"Isabella Edwards\" \/>\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=\"Isabella Edwards\" \/>\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-define-dynamic-arrays-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/\"},\"author\":{\"name\":\"Isabella Edwards\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/5579144e23c225c8188167f3e3f888dd\"},\"headline\":\"How to define dynamic arrays in Java\",\"datePublished\":\"2024-03-16T03:19:30+00:00\",\"dateModified\":\"2024-03-22T03:55:53+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-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\/how-to-define-dynamic-arrays-in-java\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/\",\"name\":\"How to define dynamic arrays in Java - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\"},\"datePublished\":\"2024-03-16T03:19:30+00:00\",\"dateModified\":\"2024-03-22T03:55:53+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.silicloud.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to define dynamic arrays 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\/5579144e23c225c8188167f3e3f888dd\",\"name\":\"Isabella Edwards\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/d4d4dec47f553ac7961d9fa4cc9bdcdcf5b7ce5106594330b6d25c5694fdbaec?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/d4d4dec47f553ac7961d9fa4cc9bdcdcf5b7ce5106594330b6d25c5694fdbaec?s=96&d=mm&r=g\",\"caption\":\"Isabella Edwards\"},\"url\":\"https:\/\/www.silicloud.com\/blog\/author\/isabellaedwards\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How to define dynamic arrays 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-define-dynamic-arrays-in-java\/","og_locale":"en_US","og_type":"article","og_title":"How to define dynamic arrays in Java","og_description":"In Java, you can use the ArrayList class to define dynamic arrays. The ArrayList class is one implementation in the Java collection framework that allows for resizing arrays dynamically. Below is an example of defining a dynamic array: import java.util.ArrayList; public class DynamicArrayExample { public static void main(String[] args) { \/\/ \u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4 ArrayList<Integer> dynamicArray = […]","og_url":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-16T03:19:30+00:00","article_modified_time":"2024-03-22T03:55:53+00:00","author":"Isabella Edwards","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Isabella Edwards","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/"},"author":{"name":"Isabella Edwards","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/5579144e23c225c8188167f3e3f888dd"},"headline":"How to define dynamic arrays in Java","datePublished":"2024-03-16T03:19:30+00:00","dateModified":"2024-03-22T03:55:53+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-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\/how-to-define-dynamic-arrays-in-java\/","url":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/","name":"How to define dynamic arrays in Java - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/#website"},"datePublished":"2024-03-16T03:19:30+00:00","dateModified":"2024-03-22T03:55:53+00:00","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-java\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.silicloud.com\/blog\/"},{"@type":"ListItem","position":2,"name":"How to define dynamic arrays 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\/5579144e23c225c8188167f3e3f888dd","name":"Isabella Edwards","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d4d4dec47f553ac7961d9fa4cc9bdcdcf5b7ce5106594330b6d25c5694fdbaec?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d4d4dec47f553ac7961d9fa4cc9bdcdcf5b7ce5106594330b6d25c5694fdbaec?s=96&d=mm&r=g","caption":"Isabella Edwards"},"url":"https:\/\/www.silicloud.com\/blog\/author\/isabellaedwards\/"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/24518","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\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/comments?post=24518"}],"version-history":[{"count":1,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/24518\/revisions"}],"predecessor-version":[{"id":58559,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/24518\/revisions\/58559"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/media?parent=24518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/categories?post=24518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/tags?post=24518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}