{"id":26525,"date":"2021-04-27T23:10:04","date_gmt":"2021-04-28T03:10:04","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/recent-posts\/showmessage-java-servlet-that-demonstrates-the-use-of-initialization-parameters-programming-code-examples-java-j2ee-j2me-servlet\/"},"modified":"2021-04-27T23:10:04","modified_gmt":"2021-04-28T03:10:04","slug":"showmessage-java-servlet-that-demonstrates-the-use-of-initialization-parameters-programming-code-examples-java-j2ee-j2me-servlet","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=26525","title":{"rendered":"ShowMessage.java  Servlet that demonstrates the use of initialization parameters. #Programming Code Examples #Java\/J2EE\/J2ME #Servlet"},"content":{"rendered":"<pre>\nShowMessage.java  Servlet that demonstrates the use of initialization parameters. Remember that, to use this servlet, you have to do three things:\n\n    * Put the modified web.xml file in the WEB-INF directory.\n    * Restart the server.\n    * Use the registered servlet name (i.e., the URL http:\/\/host\/servlet\/ShowMsg), not the raw servlet name (i.e., the URL http:\/\/host\/servlet\/cwp.ShowMessage). \n\n\npackage cwp;\n\nimport java.io.*;\nimport javax.servlet.*;\nimport javax.servlet.http.*;\n\n\/** Example using servlet initialization. Here, the message\n *  to print and the number of times the message should be\n *  repeated is taken from the init parameters.\n *  <p>\n *  Taken from Core Web Programming Java 2 Edition\n *  from Prentice Hall and Sun Microsystems Press,\n *  .\n *  May be freely used or adapted.\n *\/\n\npublic class ShowMessage extends HttpServlet {\n  private String message;\n  private String defaultMessage = &quot;No message.&quot;;\n  private int repeats = 1;\n\n  public void init() throws ServletException {\n    ServletConfig config = getServletConfig();\n    message = config.getInitParameter(&quot;message&quot;);\n    if (message == null) {\n      message = defaultMessage;\n    }\n    try {\n      String repeatString = config.getInitParameter(&quot;repeats&quot;);\n      repeats = Integer.parseInt(repeatString);\n    } catch(NumberFormatException nfe) {\n      \/\/ NumberFormatException handles case where repeatString\n      \/\/ is null *and* case where it is in an illegal format.\n    }\n  }\n\n  public void doGet(HttpServletRequest request,\n                    HttpServletResponse response)\n        throws ServletException, IOException {\n    response.setContentType(&quot;text\/html&quot;);\n    PrintWriter out = response.getWriter();\n    String title = &quot;The ShowMessage Servlet&quot;;\n    out.println(ServletUtilities.headWithTitle(title) +\n                &quot;n&quot; +\n                &quot;<h1 ALIGN=\"&quot;CENTER&quot;\">&quot; + title + &quot;<\/h1>&quot;);\n    for(int i=0; i&lt;repeats ; i++) {\n      out.println(&quot;<b>&quot; + message + &quot;<br \/>&quot;);\n    }\n    out.println(&quot;&quot;);\n  }\n}\n\n\nweb.xml\n\n\n\n?\n\nShowMsg\ncwp.ShowMessage\n?\n\nmessage\nShibboleth\n\n?\n\nrepeats\n5\n\n\n\n<\/b><\/p><\/pre>\n<p>Note: Brought from our old site: http:\/\/www.salearningschool.com\/example_codes\/ on Jan 2nd, 2017 From: http:\/\/sitestree.com\/?p=10245<br \/> Categories:Programming Code Examples, Java\/J2EE\/J2ME, Servlet<br \/>Tags:Java\/J2EE\/J2MEServlet<br \/> Post Data:2017-01-02 16:04:28<\/p>\n<p>\t\tShop Online: <a href='https:\/\/www.ShopForSoul.com\/' target='new' rel=\"noopener\">https:\/\/www.ShopForSoul.com\/<\/a><br \/>\n\t\t(Big Data, Cloud, Security, Machine Learning): Courses: <a href='http:\/\/Training.SitesTree.com' target='new' rel=\"noopener\"> http:\/\/Training.SitesTree.com<\/a><br \/>\n\t\tIn Bengali: <a href='http:\/\/Bangla.SaLearningSchool.com' target='new' rel=\"noopener\">http:\/\/Bangla.SaLearningSchool.com<\/a><br \/>\n\t\t<a href='http:\/\/SitesTree.com' target='new' rel=\"noopener\">http:\/\/SitesTree.com<\/a><br \/>\n\t\t8112223 Canada Inc.\/JustEtc: <a href='http:\/\/JustEtc.net' target='new' rel=\"noopener\">http:\/\/JustEtc.net (Software\/Web\/Mobile\/Big-Data\/Machine Learning) <\/a><br \/>\n\t\tShop Online: <a href='https:\/\/www.ShopForSoul.com'> https:\/\/www.ShopForSoul.com\/<\/a><br \/>\n\t\tMedium: <a href='https:\/\/medium.com\/@SayedAhmedCanada' target='new' rel=\"noopener\"> https:\/\/medium.com\/@SayedAhmedCanada <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ShowMessage.java Servlet that demonstrates the use of initialization parameters. Remember that, to use this servlet, you have to do three things: * Put the modified web.xml file in the WEB-INF directory. * Restart the server. * Use the registered servlet name (i.e., the URL http:\/\/host\/servlet\/ShowMsg), not the raw servlet name (i.e., the URL http:\/\/host\/servlet\/cwp.ShowMessage). package &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=26525\">Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1917],"tags":[],"class_list":["post-26525","post","type-post","status-publish","format-standard","hentry","category-fromsitestree-com","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":10160,"url":"http:\/\/bangla.sitestree.com\/?p=10160","url_meta":{"origin":26525,"position":0},"title":"ShowMessage.java Servlet that demonstrates the use of initialization parameters.","author":"","date":"August 16, 2015","format":false,"excerpt":"ShowMessage.java\u00a0 Servlet that demonstrates the use of initialization parameters. Remember that, to use this servlet, you have to do three things: \u00a0\u00a0\u00a0 * Put the modified web.xml file in the WEB-INF directory. \u00a0\u00a0\u00a0 * Restart the server. \u00a0\u00a0\u00a0 * Use the registered servlet name (i.e., the URL http:\/\/host\/servlet\/ShowMsg), not the\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10162,"url":"http:\/\/bangla.sitestree.com\/?p=10162","url_meta":{"origin":26525,"position":1},"title":"ThreeParams.java Servlet that reads and displays three request (form) parameters. 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