{"id":135686,"date":"2024-04-24T18:00:30","date_gmt":"2024-04-24T12:30:30","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135686"},"modified":"2024-04-24T18:53:19","modified_gmt":"2024-04-24T13:23:19","slug":"java-program-on-collection-arraylist-part-1","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/java-program-on-collection-arraylist-part-1\/","title":{"rendered":"Java Program on Collection Array List Part &#8211; 1"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">package dataflair;\r\nimport java.util.*;\r\npublic class TestMain \r\n{\r\n    public static void main(String[] args) \r\n    {\r\n          ArrayList&lt;Integer&gt;A=new ArrayList&lt;Integer&gt;(5);\r\n          System.out.println(A.isEmpty());\r\n          A.add(4);  \/\/0\r\n          A.add(5);  \/\/1\r\n         A.add(53);  \/\/2\r\n          A.add(17);  \/\/3\r\n          A.add(2);  \/\/4\r\n          A.add(53);  \/\/5\r\n          A.add(67);\r\n          A.add(53);\r\n          A.add(77);\r\n          System.out.println(A);\r\n        System.out.println(\"Index of \"+A.indexOf(53));\r\n        System.out.println(\"Last Index of \"+A.lastIndexOf(53));\r\n        List&lt;Integer&gt;B=new ArrayList&lt;Integer&gt;(5);\r\n        B=A.subList(2,6);\r\n         System.out.println(B);\r\n         Object ar[];\r\n         ar=A.toArray();\r\n         for(Object O:ar)\r\n             System.out.println(O); \r\n        \/\/A.add(2, 125);\r\n\/\/        A.set(7, 125);\r\n\/\/        System.out.println(A);\r\n\/\/        System.out.println(A.get(4)); \r\n         \r\n\/\/        Integer I=2;\r\n\/\/        A.remove(I);\r\n\/\/        System.out.println(A);\r\n        \/\/ Generic \r\n\/\/        ArrayList&lt;String&gt;A=new ArrayList&lt;String&gt;(5);\r\n\/\/        System.out.println(A.size());\r\n\/\/        A.add(\"Rajesh\");\r\n\/\/        System.out.println(A.add(\"vivek\"));\r\n\/\/        A.add(\"Amit\");\r\n\/\/        A.add(\"Ashok\");\r\n\/\/        System.out.println(A.add(\"vivek\"));\r\n\/\/        \r\n\/\/        A.add(\"Anurag\");\r\n\/\/        A.add(\"Satish\");\r\n\/\/        System.out.println(A.add(\"vivek\"));\r\n\/\/        \r\n\/\/        System.out.println(A);  \r\n\/\/      System.out.println(\"-----------------------------------------\");\r\n      \/\/ Remove according to object  \r\n      \/\/System.out.println(A.remove(\"Amitesh\"));\r\n        \r\n      \/\/ Remove according to index number  \r\n\/\/        System.out.println(A.remove(9));\r\n\/\/        System.out.println(A);\r\n        \r\n\/\/        System.out.println(A.size());\r\n\/\/        \r\n        \/\/Non Generic\r\n\/\/         ArrayList mylist=new ArrayList();\r\n\/\/         mylist.add(\"Vivek\");\r\n\/\/         mylist.add(140);\r\n\/\/         mylist.add(true);\r\n\/\/         mylist.add(56.77);\r\n\/\/         System.out.println(mylist);\r\n    }\r\n    \r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 package dataflair; import java.util.*; public class TestMain { public static void main(String[] args) { ArrayList&lt;Integer&gt;A=new ArrayList&lt;Integer&gt;(5); System.out.println(A.isEmpty()); A.add(4); \/\/0 A.add(5); \/\/1 A.add(53); \/\/2 A.add(17); \/\/3 A.add(2); \/\/4 A.add(53); \/\/5 A.add(67); A.add(53); A.add(77);&#46;&#46;&#46;<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[31574,7345,31575,29859,29858,31573],"class_list":["post-135686","post","type-post","status-publish","format-standard","hentry","category-java","tag-collection-array-list-in-java","tag-java","tag-java-collection-array-list","tag-java-practical","tag-java-program","tag-java-program-on-collection-array-list"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Java Program on Collection Array List Part - 1 - DataFlair<\/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:\/\/data-flair.training\/blogs\/java-program-on-collection-arraylist-part-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java Program on Collection Array List Part - 1 - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 package dataflair; import java.util.*; public class TestMain { public static void main(String[] args) { ArrayList&lt;Integer&gt;A=new ArrayList&lt;Integer&gt;(5); System.out.println(A.isEmpty()); A.add(4); \/\/0 A.add(5); \/\/1 A.add(53); \/\/2 A.add(17); \/\/3 A.add(2); \/\/4 A.add(53); \/\/5 A.add(67); A.add(53); A.add(77);&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/java-program-on-collection-arraylist-part-1\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-24T12:30:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-24T13:23:19+00:00\" \/>\n<meta name=\"author\" content=\"TechVidvan Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"TechVidvan Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Java Program on Collection Array List Part - 1 - DataFlair","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:\/\/data-flair.training\/blogs\/java-program-on-collection-arraylist-part-1\/","og_locale":"en_US","og_type":"article","og_title":"Java Program on Collection Array List Part - 1 - DataFlair","og_description":"Program 1 package dataflair; 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