{"id":645,"date":"2021-07-13T23:33:53","date_gmt":"2021-07-13T23:33:53","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=645"},"modified":"2021-09-11T11:23:48","modified_gmt":"2021-09-11T11:23:48","slug":"how-to-decode-url-content-in-java","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/","title":{"rendered":"How to Decode URL content in Java ?"},"content":{"rendered":"
\n
\n

How to Decode URL content in Java ?<\/h2>\n
    \n
  • The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.<\/li>\n
  • It is a common requirement to implement URL encoding and decoding in Java while creating crawlers or downloaders.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
    \n
    \n
    <\/div>\n<\/div>\n<\/div>\n
    \n
    \"<\/div>\n<\/div>\n

    Decode URL<\/p>\n

    \n
    \n

    The Decode URL following steps are given below,<\/p>\n<\/div>\n<\/div>\n

    \n
    \n
      \n
    • The same URL can be encoded multiple times, we need to decode it until the URL cannnot be decoded further. For example, \u201cvideo%252Fmp4\u201d is the result of two encodings. Upon decoding it once, we get \u201cvideo%2Fmp4\u201d. Now the URL needs to be further decoded so that we get \u201cvideo\/mp4\u201d, which is the result.<\/li>\n
    • We use the decode method of a predefined Java class named URLDecoder.<\/li>\n
    • The decode method of URLDecoder takes two arguments:\n
        \n
      • The first argument defines the URL to be decoded.<\/li>\n
      • The second argument defines the decoding scheme to be used.<\/li>\n<\/ul>\n<\/li>\n
      • After decoding, the resulting decoded URL is returned.<\/li>\n
      • We create two variables: prevURL, which is empty, and decodeURL, which contains the URL to be decoded.<\/li>\n
      • We create an iteration that runs until prevURL!=decodeURL<\/li>\n
      • Now we update prevURL to decodeURL and update decodeURL with the decoded value of the URL passed.<\/li>\n
      • As you can see, prevURL!=decodeURL, so we run it again and again.<\/li>\n
      • Now, prevURL=decodeURL, so the decoded URL is returned.<\/li>\n<\/ul>\n

        Sample Code<\/h2>\n
        <\/div> 
        import java.io.UnsupportedEncodingException;import java.net.URLDecoder; public class DecodeURLExample {    public static void main(String a[]){        try {            System.out.println(URLDecoder.decode("special+chars%3A+%26%25*+", "UTF-8"));        } catch (UnsupportedEncodingException ex) {            ex.printStackTrace();        }    }}<\/code><\/pre> <\/div>\n
        \n
        \n
        Output<\/h2>\n<\/div>\n<\/div>\n
        \n
        \n
        \n
        special chars: &%* <\/span><\/code><\/pre>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
        Answer : The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding..<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4004],"tags":[195,491,360,203,199,214,198,363,209,15903,205,4168,4173,4167,2936,222,196,212,213,4169,4170,4166,4172,4174,286,207,366,204,217,282,4023,483,206,200,197,4165,4171,280,364,968],"class_list":["post-645","post","type-post","status-publish","format-standard","hentry","category-java","tag-accenture-interview-questions-and-answers","tag-applied-materials-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-chetu-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-collabera-technologies-interview-questions-and-answers","tag-craterzone-interview-questions-and-answers","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-encode-string-in-java","tag-encoding-and-decoding-in-java-example","tag-encoding-and-decoding-program-in-java","tag-fis-global-business-solutions-india-pvt-ltd-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-java-decode-string","tag-java-encode-url-path","tag-java-program-to-encode-and-decode-a-string","tag-java-uri-encode","tag-java-url-decode","tag-lt-infotech-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-persistent-systems-interview-questions-and-answers","tag-rbs-india-de-interview-questions-and-answers","tag-reliance-industries-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-url-decode","tag-url-encode","tag-virtusa-consulting-services-pvt-ltd-interview-questions-and-answers","tag-wells-fargo-interview-questions-and-answers","tag-wipro-infotech-interview-questions-and-answers"],"yoast_head":"\nHow to Decode URL content in Java ? - Java Interview Questions<\/title>\n<meta name=\"description\" content=\"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Decode URL content in Java ? - Java Interview Questions\" \/>\n<meta property=\"og:description\" content=\"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-13T23:33:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-11T11:23:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg\" \/>\n<meta name=\"author\" content=\"Editor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Editor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/\"},\"author\":{\"name\":\"Editor\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/#\\\/schema\\\/person\\\/4d5a581fb5470d1560324bddc5e8b757\"},\"headline\":\"How to Decode URL content in Java ?\",\"datePublished\":\"2021-07-13T23:33:53+00:00\",\"dateModified\":\"2021-09-11T11:23:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/\"},\"wordCount\":296,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cdn.wikitechy.com\\\/interview-questions\\\/java\\\/decode-url.jpg\",\"keywords\":[\"Accenture interview questions and answers\",\"Applied Materials interview questions and answers\",\"Atos interview questions and answers\",\"Capgemini interview questions and answers\",\"CASTING NETWORKS INDIA PVT LIMITED interview questions and answers\",\"CGI Group Inc interview questions and answers\",\"Chetu interview questions and answers\",\"Ciena Corporation interview questions and answers\",\"Collabera Technologies interview questions and answers\",\"Craterzone Interview Questions and Answers\",\"Dell International Services India Pvt Ltd interview questions and answers\",\"encode string in java\",\"encoding and decoding in java example\",\"encoding and decoding program in java\",\"FIS Global Business Solutions India Pvt Ltd interview questions and answers\",\"Flipkart interview questions and answers\",\"IBM interview questions and answers\",\"Indecomm Global Services interview questions and answers\",\"Infosys Technologies interview questions and answers\",\"java decode string\",\"java encode url path\",\"java program to encode and decode a string\",\"java uri encode\",\"java url decode\",\"L&T Infotech interview questions and answers\",\"Mphasis interview questions and answers\",\"NetApp interview questions and answers\",\"Oracle Corporation interview questions and answers\",\"PeopleStrong interview questions and answers\",\"Persistent Systems interview questions and answers\",\"RBS India De interview questions and answers\",\"Reliance Industries Ltd interview questions and answers\",\"SAP Labs India Pvt Ltd interview questions and answers\",\"Tech Mahindra interview questions and answers\",\"UnitedHealth Group interview questions and answers\",\"url decode\",\"url encode\",\"Virtusa Consulting Services Pvt Ltd interview questions and answers\",\"Wells Fargo interview questions and answers\",\"Wipro Infotech interview questions and answers\"],\"articleSection\":[\"Java\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/\",\"url\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/\",\"name\":\"How to Decode URL content in Java ? - Java Interview Questions\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cdn.wikitechy.com\\\/interview-questions\\\/java\\\/decode-url.jpg\",\"datePublished\":\"2021-07-13T23:33:53+00:00\",\"dateModified\":\"2021-09-11T11:23:48+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/#\\\/schema\\\/person\\\/4d5a581fb5470d1560324bddc5e8b757\"},\"description\":\"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/java\\\/how-to-decode-url-content-in-java\\\/#primaryimage\",\"url\":\"https:\\\/\\\/cdn.wikitechy.com\\\/interview-questions\\\/java\\\/decode-url.jpg\",\"contentUrl\":\"https:\\\/\\\/cdn.wikitechy.com\\\/interview-questions\\\/java\\\/decode-url.jpg\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/#website\",\"url\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/\",\"name\":\"Wikitechy\",\"description\":\"Interview Questions\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/#\\\/schema\\\/person\\\/4d5a581fb5470d1560324bddc5e8b757\",\"name\":\"Editor\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g\",\"caption\":\"Editor\"},\"url\":\"https:\\\/\\\/www.wikitechy.com\\\/interview-questions\\\/author\\\/editor\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Decode URL content in Java ? - Java Interview Questions","description":"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.","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:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/","og_locale":"en_US","og_type":"article","og_title":"How to Decode URL content in Java ? - Java Interview Questions","og_description":"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.","og_url":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/","og_site_name":"Wikitechy","article_published_time":"2021-07-13T23:33:53+00:00","article_modified_time":"2021-09-11T11:23:48+00:00","og_image":[{"url":"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg","type":"","width":"","height":""}],"author":"Editor","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Editor","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#article","isPartOf":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/"},"author":{"name":"Editor","@id":"https:\/\/www.wikitechy.com\/interview-questions\/#\/schema\/person\/4d5a581fb5470d1560324bddc5e8b757"},"headline":"How to Decode URL content in Java ?","datePublished":"2021-07-13T23:33:53+00:00","dateModified":"2021-09-11T11:23:48+00:00","mainEntityOfPage":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/"},"wordCount":296,"commentCount":0,"image":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#primaryimage"},"thumbnailUrl":"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg","keywords":["Accenture interview questions and answers","Applied Materials interview questions and answers","Atos interview questions and answers","Capgemini interview questions and answers","CASTING NETWORKS INDIA PVT LIMITED interview questions and answers","CGI Group Inc interview questions and answers","Chetu interview questions and answers","Ciena Corporation interview questions and answers","Collabera Technologies interview questions and answers","Craterzone Interview Questions and Answers","Dell International Services India Pvt Ltd interview questions and answers","encode string in java","encoding and decoding in java example","encoding and decoding program in java","FIS Global Business Solutions India Pvt Ltd interview questions and answers","Flipkart interview questions and answers","IBM interview questions and answers","Indecomm Global Services interview questions and answers","Infosys Technologies interview questions and answers","java decode string","java encode url path","java program to encode and decode a string","java uri encode","java url decode","L&T Infotech interview questions and answers","Mphasis interview questions and answers","NetApp interview questions and answers","Oracle Corporation interview questions and answers","PeopleStrong interview questions and answers","Persistent Systems interview questions and answers","RBS India De interview questions and answers","Reliance Industries Ltd interview questions and answers","SAP Labs India Pvt Ltd interview questions and answers","Tech Mahindra interview questions and answers","UnitedHealth Group interview questions and answers","url decode","url encode","Virtusa Consulting Services Pvt Ltd interview questions and answers","Wells Fargo interview questions and answers","Wipro Infotech interview questions and answers"],"articleSection":["Java"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/","url":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/","name":"How to Decode URL content in Java ? - Java Interview Questions","isPartOf":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#primaryimage"},"image":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#primaryimage"},"thumbnailUrl":"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg","datePublished":"2021-07-13T23:33:53+00:00","dateModified":"2021-09-11T11:23:48+00:00","author":{"@id":"https:\/\/www.wikitechy.com\/interview-questions\/#\/schema\/person\/4d5a581fb5470d1560324bddc5e8b757"},"description":"How to Decode URL content in Java ? - The task to the reverse of URL encoding and distinct from URL parser is called Url Decoding.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.wikitechy.com\/interview-questions\/java\/how-to-decode-url-content-in-java\/#primaryimage","url":"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg","contentUrl":"https:\/\/cdn.wikitechy.com\/interview-questions\/java\/decode-url.jpg"},{"@type":"WebSite","@id":"https:\/\/www.wikitechy.com\/interview-questions\/#website","url":"https:\/\/www.wikitechy.com\/interview-questions\/","name":"Wikitechy","description":"Interview Questions","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wikitechy.com\/interview-questions\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.wikitechy.com\/interview-questions\/#\/schema\/person\/4d5a581fb5470d1560324bddc5e8b757","name":"Editor","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e9531079fe7e07841b7b156c04d65e5f39d4adfd18b6ffe3edfff8ca5aab85b5?s=96&d=mm&r=g","caption":"Editor"},"url":"https:\/\/www.wikitechy.com\/interview-questions\/author\/editor\/"}]}},"_links":{"self":[{"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/posts\/645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/comments?post=645"}],"version-history":[{"count":3,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/posts\/645\/revisions"}],"predecessor-version":[{"id":3412,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/posts\/645\/revisions\/3412"}],"wp:attachment":[{"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/media?parent=645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/categories?post=645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wikitechy.com\/interview-questions\/wp-json\/wp\/v2\/tags?post=645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}