{"id":278,"date":"2012-11-11T19:23:35","date_gmt":"2012-11-11T19:23:35","guid":{"rendered":"http:\/\/ilias-laptop\/examples\/core-java\/xml\/dom\/pretty-print-xml-in-java\/"},"modified":"2013-06-28T00:02:15","modified_gmt":"2013-06-27T21:02:15","slug":"pretty-print-xml-in-java","status":"publish","type":"post","link":"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/","title":{"rendered":"Pretty print XML in Java"},"content":{"rendered":"<p>This is an example of how to pretty print an xml file in Java.\u00a0We have implemented a method, that is <code>void prettyPrint(Document xml)<\/code>, in order to transform the DOM Document to a formatted xml String. The steps to get an xml file and pretty print it in a String format using the example&#8217;s method is described below:<\/p>\n<ul>\n<li>Obtain a new instance of a <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/parsers\/DocumentBuilderFactory.html\" target=\"_blank\">DocumentBuilderFactory<\/a>, that is a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents. <\/li>\n<li>Set the parser produced so as not to validate documents as they are parsed, using <code>setValidating(boolean validating)<\/code> API method of DocumentBuilderFactory, with validating set to false. <\/li>\n<li>Create a new instance of a <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/parsers\/DocumentBuilder.html\" target=\"_blank\">DocumentBuilder<\/a>, using <code>newDocumentBuilder()<\/code> API method of DocumentBuilderFactory. <\/li>\n<li>Parse the <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/java\/io\/FileInputStream.html\" target=\"_blank\">FileInputStream<\/a> with the content to be parsed, using <code>parse(InputStream is)<\/code> API method of DocumentBuilder. This method parses the content of the given InputStream as an XML document and returns a new DOM <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/org\/w3c\/dom\/Document.html\" target=\"_blank\">Document<\/a> object.<\/li>\n<li>Call <code>void prettyPrint(Document xml)<\/code> method of the example. The method gets the xml Document and prints it after transforming it with specific parameters, such as encoding. The method uses a <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/transform\/Transformer.html\" target=\"_blank\">Transformer<\/a>, that is created using <code>newTransformer()<\/code> API method of <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/transform\/TransformerFactory.html\" target=\"_blank\">TransformerFactory<\/a>. The Transformer is used to transform a source tree into a result tree. After setting specific output properties to the transformer, using <code>setOutputProperty(String name, String value)<\/code> API method of Transformer, the method uses it to make the transformation, with <code>transform(Source xmlSource, Result outputTarget)<\/code> API method of Transformer. The parameters are the <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/transform\/dom\/DOMSource.html\" target=\"_blank\">DOMSource<\/a> with the DOM node and the result that is a <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/javax\/xml\/transform\/stream\/StreamResult.html\" target=\"_blank\">StreamResult<\/a> created from a <a href=\"http:\/\/docs.oracle.com\/javase\/7\/docs\/api\/java\/io\/StringWriter.html\" target=\"_blank\">StringWriter<\/a>.<\/li>\n<\/ul>\n<p>Let\u2019s take a look at the code snippet that follows: \u00a0<div style=\"display:inline-block; margin: 15px 0;\"> <div id=\"adngin-JavaCodeGeeks_incontent_video-0\" style=\"display:inline-block;\"><\/div> <\/div><\/p>\n<pre class=\"brush:java\">\r\npackage com.javacodegeeks.snippets.core;\r\n\r\nimport java.io.File;\r\nimport java.io.FileInputStream;\r\nimport java.io.StringWriter;\r\nimport java.io.Writer;\r\n\r\nimport javax.xml.parsers.DocumentBuilder;\r\nimport javax.xml.parsers.DocumentBuilderFactory;\r\nimport javax.xml.transform.OutputKeys;\r\nimport javax.xml.transform.Transformer;\r\nimport javax.xml.transform.TransformerFactory;\r\nimport javax.xml.transform.dom.DOMSource;\r\nimport javax.xml.transform.stream.StreamResult;\r\n\r\nimport org.w3c.dom.Document;\r\n\r\npublic class PrettyPrintXMLInJava {\r\n\t\r\n\tpublic static void main(String[] args) throws Exception {\r\n\t\t\r\n\t\tDocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();\r\n\t\tdbf.setValidating(false);\r\n\t\tDocumentBuilder db = dbf.newDocumentBuilder();\r\n\t\t\r\n\t\tDocument doc = db.parse(new FileInputStream(new File(\"in.xml\")));\r\n\t\tprettyPrint(doc);\r\n\t\t\r\n\t}\r\n\t\r\n\tpublic static final void prettyPrint(Document xml) throws Exception {\r\n\t\tTransformer tf = TransformerFactory.newInstance().newTransformer();\r\n\t\ttf.setOutputProperty(OutputKeys.ENCODING, \"UTF-8\");\r\n\t\ttf.setOutputProperty(OutputKeys.INDENT, \"yes\");\r\n\t\tWriter out = new StringWriter();\r\n\t\ttf.transform(new DOMSource(xml), new StreamResult(out));\r\n\t\tSystem.out.println(out.toString());\r\n\t}\r\n\r\n}\r\n<\/pre>\n<p>\n<b>Input:<\/b><\/p>\n<pre class=\"brush:xml\">\r\n&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;&lt;rss version=\"2.0\"&gt;&lt;channel&gt;&lt;title&gt;Java Tutorials and Examples 1&lt;\/title&gt;&lt;language&gt;en-us&lt;\/language&gt;&lt;\/channel&gt;&lt;\/rss&gt;\r\n<\/pre>\n<p>\n<b>Output:<\/b><\/p>\n<pre style=\"background: #f0f0f0; border: 1px dashed #CCCCCC; color: black; font-family: arial; font-size: 12px; height: auto; line-height: 20px; overflow: auto; padding: 0px; text-align: left; width: 99%;\">\r\n<code style=\"color: black; word-wrap: normal;\">&lt;?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?&gt;\r\n&lt;rss version=\"2.0\"&gt;\r\n&lt;channel&gt;\r\n&lt;title&gt;Java Tutorials and Examples 1&lt;\/title&gt;\r\n&lt;language&gt;en-us&lt;\/language&gt;\r\n&lt;\/channel&gt;\r\n&lt;\/rss&gt;<\/code>\r\n<\/pre>\n<p>&nbsp;\u00a0<br \/>\nThis was an example of how to pretty print an xml file in Java.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is an example of how to pretty print an xml file in Java.\u00a0We have implemented a method, that is void prettyPrint(Document xml), in order to transform the DOM Document to a formatted xml String. The steps to get an xml file and pretty print it in a String format using the example&#8217;s method is &hellip;<\/p>\n","protected":false},"author":7,"featured_media":1204,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[189,197,1066],"class_list":["post-278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dom","tag-core-java-2","tag-dom-2","tag-xml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pretty print XML in Java - Java Code Geeks<\/title>\n<meta name=\"description\" content=\"This is an example of how to pretty print an xml file in Java.\u00a0We have implemented a method, that is void prettyPrint(Document xml), in order to transform\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pretty print XML in Java - Java Code Geeks\" \/>\n<meta property=\"og:description\" content=\"This is an example of how to pretty print an xml file in Java.\u00a0We have implemented a method, that is void prettyPrint(Document xml), in order to transform\" \/>\n<meta property=\"og:url\" content=\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Examples Java Code Geeks\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/javacodegeeks\" \/>\n<meta property=\"article:published_time\" content=\"2012-11-11T19:23:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-06-27T21:02:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/java-logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"150\" \/>\n\t<meta property=\"og:image:height\" content=\"150\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ilias Tsagklis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@javacodegeeks\" \/>\n<meta name=\"twitter:site\" content=\"@javacodegeeks\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ilias Tsagklis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\"},\"author\":{\"name\":\"Ilias Tsagklis\",\"@id\":\"https:\/\/examples.javacodegeeks.com\/#\/schema\/person\/ca18b1aa108e3bfadf717e563e0a7a6e\"},\"headline\":\"Pretty print XML in Java\",\"datePublished\":\"2012-11-11T19:23:35+00:00\",\"dateModified\":\"2013-06-27T21:02:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\"},\"wordCount\":281,\"commentCount\":2,\"publisher\":{\"@id\":\"https:\/\/examples.javacodegeeks.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2012\/12\/java-logo.jpg\",\"keywords\":[\"core java\",\"dom\",\"xml\"],\"articleSection\":[\"DOM\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\",\"url\":\"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/xml\/dom\/pretty-print-xml-in-java\/\",\"name\":\"Pretty print XML in Java - 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