{"id":135055,"date":"2024-04-24T18:00:21","date_gmt":"2024-04-24T12:30:21","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135055"},"modified":"2024-05-14T16:27:10","modified_gmt":"2024-05-14T10:57:10","slug":"java-program-on-how-to-write-data-in-file","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/java-program-on-how-to-write-data-in-file\/","title":{"rendered":"Java Program on How to Write Data in File"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">package dataflair;\r\nimport java.io.*;\r\npublic class TestWrite1 \r\n{\r\n     public static void main(String[] args) throws IOException \r\n     {\r\n          FileOutputStream fos=null;\r\n           byte b[];\r\n          try\r\n          {\r\n               File F=new File(\"d:\/\/filedata\");\r\n               F.mkdir();\r\n              fos=new FileOutputStream(\"d:\/\/filedata\/student.txt\");\r\n              char ch;\r\n              String S=\"Data Flair free course with free certificate ,Indore MP India\";\r\n              b=S.getBytes();\r\n              fos.write(b);\r\n\/\/              for(int i=0;i&lt;b.length;i++)\r\n\/\/                  System.out.print(\" \"+b[i]);\r\n              \r\n              fos.flush();\r\n\/\/              for(int i=0;i&lt;S.length();i++)\r\n\/\/              {\r\n\/\/                   ch=S.charAt(i);\r\n\/\/                   fos.write(ch);\r\n\/\/              }\r\n              \r\n              System.out.println(\"File Created.......\");\r\n          }\r\n          finally\r\n          {\r\n              fos.close();\r\n          }\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\nimport java.io.*;\r\npublic class TestFileWrite2 \r\n{\r\n    public static void main(String[] args) throws IOException\r\n    {\r\n       FileOutputStream fos=null;\r\n           byte b[];\r\n          try\r\n          {\r\n               File F=new File(\"d:\/\/filedata\");\r\n               F.mkdir();\r\n              fos=new FileOutputStream(\"d:\/\/filedata\/student.txt\");\r\n              char ch;\r\n              String S=\"Data Flair Free Course With Free Certificate ,Indore MP India\";\r\n               for (int i = 0; i &lt; S.length(); i++) \r\n               {\r\n                  ch=S.charAt(i);\r\n                  if(Character.isUpperCase(ch))\r\n                      fos.write(ch);\r\n               }\r\n              \r\n              System.out.println(\"File Created.......\");\r\n          }\r\n          finally\r\n          {\r\n              fos.close();\r\n          }\r\n             \r\n    }\r\n    \r\n}<\/pre>\n<h3>Program 3<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage dataflair;\r\nimport java.io.*;\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class TestFileWrite3 \r\n{\r\n    public static void main(String[] args) throws IOException\r\n    {\r\n      FileOutputStream fos=null;\r\n           byte b[];\r\n          try\r\n          {\r\n               File F=new File(\"d:\/\/filedata\");\r\n               F.mkdir();\r\n               File F1=new File(\"d:\/\/filedata\/student123.txt\");\r\n               fos=new FileOutputStream(F1);\r\n              char ch;\r\n              String S=\"Data Flair Free Course With Free Certificate ,Indore MP India\";\r\n               for (int i = 0; i &lt; S.length(); i++) \r\n               {\r\n                  ch=S.charAt(i);\r\n                  if(Character.isUpperCase(ch))\r\n                      fos.write(ch);\r\n               }\r\n              \r\n              System.out.println(\"File Created.......\");\r\n          }\r\n          finally\r\n          {\r\n              fos.close();\r\n          }    \r\n    }\r\n    \r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 package dataflair; import java.io.*; public class TestWrite1 { public static void main(String[] args) throws IOException { FileOutputStream fos=null; byte b[]; try { File F=new File(&#8220;d:\/\/filedata&#8221;); F.mkdir(); fos=new FileOutputStream(&#8220;d:\/\/filedata\/student.txt&#8221;); char ch; String S=&#8221;Data&#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":[31587,7345,29878,29858,31586],"class_list":["post-135055","post","type-post","status-publish","format-standard","hentry","category-java","tag-how-to-write-data-in-file","tag-java","tag-java-prcatical","tag-java-program","tag-java-program-on-how-to-write-data-in-file"],"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 How to Write Data in File - 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-how-to-write-data-in-file\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java Program on How to Write Data in File - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 package dataflair; import java.io.*; public class TestWrite1 { public static void main(String[] args) throws IOException { FileOutputStream fos=null; byte b[]; try { File F=new File(&quot;d:\/\/filedata&quot;); F.mkdir(); fos=new FileOutputStream(&quot;d:\/\/filedata\/student.txt&quot;); char ch; String S=&quot;Data&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/java-program-on-how-to-write-data-in-file\/\" \/>\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=\"2024-04-24T12:30:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-14T10:57:10+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 How to Write Data in File - 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-how-to-write-data-in-file\/","og_locale":"en_US","og_type":"article","og_title":"Java Program on How to Write Data in File - DataFlair","og_description":"Program 1 package dataflair; 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