{"id":145721,"date":"2025-07-02T11:24:35","date_gmt":"2025-07-02T05:54:35","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=145721"},"modified":"2025-07-02T12:23:21","modified_gmt":"2025-07-02T06:53:21","slug":"implementation-of-queue-using-array-in-dsa-java","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/implementation-of-queue-using-array-in-dsa-java\/","title":{"rendered":"Implementation of Queue using Array in DSA Java"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">package dataflair;\r\nimport java.util.Scanner;\r\npublic class MyQueue \r\n{\r\n    private int rear = -1;\r\n    private int front = 0;\r\n    private final int MAXSIZE = 10;\r\n    private int queue[] = new int[MAXSIZE];\r\n    Scanner scan = new Scanner(System.in);\r\n    int n;\r\n\r\n    public void insert() \r\n{\r\n        if (rear == MAXSIZE - 1)\r\n            System.out.println(\"Queue is overflow\");\r\n        else {\r\n            System.out.println(\"Enter an element for insert\");\r\n            n = scan.nextInt();\r\n            rear++;\r\n            queue[rear] = n;\r\n        }\r\n    }\r\n\r\n    public void delete() \r\n    {\r\n        if (front &gt; rear)\r\n            System.out.println(\"Queue is empty\");\r\n        else \r\n        {\r\n            n = queue[front];\r\n            System.out.println(\"Deleted element is: \" + n);\r\n            front++;\r\n        }\r\n    }\r\n\r\n    public void display() {\r\n        if (front &gt; rear)\r\n            System.out.println(\"Queue is empty\");\r\n        else {\r\n            System.out.println(\"\\n--- Elements of Queue ---\\n\");\r\n            for (int i = rear; i &gt;= front; i--)\r\n                System.out.print(queue[i] + \" \");\r\n        }\r\n    }\r\n}\r\n<\/pre>\n<h3>Program 2<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">package dataflair;\r\n\r\nimport java.util.Scanner;\r\n\r\npublic class TestQueue \r\n{\r\n\r\n    public static void main(String[] args) \r\n    {\r\n        \r\n\r\n        int choice = 0;\r\n        Scanner scan = new Scanner(System.in);\r\n        MyQueue M = new MyQueue();\r\n\r\n        do \r\n        {\r\n            \r\n            System.out.println(\"\\n------------------QUEUE MENU------------------\");\r\n            System.out.println(\"1. Insert\");\r\n            System.out.println(\"2. Delete\");\r\n            System.out.println(\"3. Display\");\r\n            System.out.println(\"4. Exit\");\r\n            System.out.println(\"\\n---------------------------------------------\");\r\n            System.out.println(\"Enter your choice:\");\r\n            choice = scan.nextInt();\r\n\r\n            switch (choice) \r\n            {\r\n                case 1: \r\n                    M.insert();\r\n                    break;\r\n                case 2: \r\n                    M.delete();\r\n                    break;\r\n                case 3: \r\n                    M.display();\r\n                    break;\r\n                case 4:\r\n                    break;\r\n                default: \r\n                    System.out.println(\"Invalid choice\");\r\n            }\r\n        } while (choice != 4);\r\n    }\r\n}\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 package dataflair; import java.util.Scanner; public class MyQueue { private int rear = -1; private int front = 0; private final int MAXSIZE = 10; private int queue[] = new int[MAXSIZE]; Scanner scan&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31451],"tags":[34786,32295,32316,32317,32290,34788,34787,34790,34789],"class_list":["post-145721","post","type-post","status-publish","format-standard","hentry","category-dsa-java-tutorials","tag-data-structures-algorithms","tag-data-structures-using-java","tag-dsa-java-practical","tag-dsa-java-program","tag-dsa-using-java","tag-implementation-of-queue-using-array","tag-implementation-of-queue-using-array-in-dsa-java","tag-queue-implementation-using-array","tag-queue-implementation-using-array-in-dsa-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Implementation of Queue using Array in DSA Java - 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\/implementation-of-queue-using-array-in-dsa-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Implementation of Queue using Array in DSA Java - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 package dataflair; import java.util.Scanner; public class MyQueue { private int rear = -1; private int front = 0; private final int MAXSIZE = 10; private int queue[] = new int[MAXSIZE]; Scanner scan&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/implementation-of-queue-using-array-in-dsa-java\/\" \/>\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=\"2025-07-02T05:54:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-02T06:53:21+00:00\" \/>\n<meta name=\"author\" content=\"DataFlair 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=\"DataFlair 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":"Implementation of Queue using Array in DSA Java - 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\/implementation-of-queue-using-array-in-dsa-java\/","og_locale":"en_US","og_type":"article","og_title":"Implementation of Queue using Array in DSA Java - DataFlair","og_description":"Program 1 package dataflair; 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