{"id":17235,"date":"2024-03-15T14:35:18","date_gmt":"2024-03-15T14:35:18","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-java-pass-input-values-to-an-array\/"},"modified":"2025-08-07T09:38:15","modified_gmt":"2025-08-07T09:38:15","slug":"how-can-java-pass-input-values-to-an-array","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-java-pass-input-values-to-an-array\/","title":{"rendered":"How can Java pass input values to an array?"},"content":{"rendered":"<p>Here is the method in Java for taking input values and assigning them to an array:<\/p>\n<ol>\n<li>To get user input values, use the Scanner class. First, import the java.util.Scanner class.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.util.Scanner;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-type\">Scanner<\/span> <span class=\"hljs-variable\">scanner<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Scanner<\/span>(System.in);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6<\/span>\r\n        System.out.print(<span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff1a\"<\/span>);\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">length<\/span> <span class=\"hljs-operator\">=<\/span> scanner.nextInt();\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u6570\u7ec4<\/span>\r\n        <span class=\"hljs-type\">int<\/span>[] array = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">int<\/span>[length];\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u6570\u7ec4\u7684\u503c<\/span>\r\n        System.out.println(<span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u503c\uff1a\"<\/span>);\r\n        <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">i<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">0<\/span>; i &lt; length; i++) {\r\n            array[i] = scanner.nextInt();\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u6253\u5370\u6570\u7ec4\u7684\u503c<\/span>\r\n        System.out.println(<span class=\"hljs-string\">\"\u6570\u7ec4\u7684\u503c\u4e3a\uff1a\"<\/span>);\r\n        <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">i<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">0<\/span>; i &lt; length; i++) {\r\n            System.out.println(array[i]);\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5173\u95edScanner<\/span>\r\n        scanner.close();\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example code above, the Scanner class is first used to get the length of the array input by the user, then an integer array is created based on the array length. Next, a loop structure is used to get the array values input by the user and assign them to each element in the array. Finally, another loop structure is used to print the value of each element in the array.<\/p>\n<ol>\n<li>Use command-line arguments to retrieve input values. When running a Java program, you can pass input values through parameters in the command line.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6<\/span>\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">length<\/span> <span class=\"hljs-operator\">=<\/span> Integer.parseInt(args[<span class=\"hljs-number\">0<\/span>]);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u6570\u7ec4<\/span>\r\n        <span class=\"hljs-type\">int<\/span>[] array = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">int<\/span>[length];\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u6570\u7ec4\u7684\u503c<\/span>\r\n        <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">i<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">0<\/span>; i &lt; length; i++) {\r\n            array[i] = Integer.parseInt(args[i + <span class=\"hljs-number\">1<\/span>]);\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u6253\u5370\u6570\u7ec4\u7684\u503c<\/span>\r\n        <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">i<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">0<\/span>; i &lt; length; i++) {\r\n            System.out.println(array[i]);\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example code above, the program retrieves the command-line arguments passed through the args array. Index args[0] represents the length of the array, and args[1] onwards represents the values of the array. By using a loop structure, the program passes the arguments to each element in the array and prints out the value of each element.<\/p>\n<p>Both methods can be used to input values into an array, the specific method to use depends on the actual needs and usage scenarios.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here is the method in Java for taking input values and assigning them to an array: To get user input values, use the Scanner class. First, import the java.util.Scanner class. import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); \/\/ \u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6 System.out.print(&#8220;\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff1a&#8221;); int length = scanner.nextInt(); \/\/ [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-17235","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"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 can Java pass input values to an array? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how can java pass input values to an array?. 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