{"id":1868,"date":"2022-08-30T15:20:07","date_gmt":"2022-08-30T15:20:07","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/12\/02\/problem-about-gwt2-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:20:07","modified_gmt":"2022-08-30T15:20:07","slug":"problem-about-gwt2-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-gwt2-collection-of-common-programming-errors\/","title":{"rendered":"problem about gwt2-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/27d12922a57b52dee016d6643dac0fcf?s=128&amp;d=identicon&amp;r=PG\" \/><br \/>\nSCK<br \/>\ngwt2<br \/>\nHi Just going through GWT 2.5, came across ErrorHandler, which can be added to a widget which has implemented hasErrorHanlder. Can anyone help me in understanding.I am trying to write new Custom widget by extending the Compoiste if i implement HasErrorHanlders interface it helps me to catch what ever errors occur in this class should be known to it usage class&#8230; may be i am wrong..?<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/0872aa785535da245c1bf0ff4e413048?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nDaniel Kutik<br \/>\ngwt smartgwt gwt2<br \/>\ntrying to use smart GWTUsing smart gwt 2.5 dowloded from link belowsmartgwt 2.5Firefox 6.0I made a small web application project(without smart GWT) which is working fine.Now in the *same project i added smartGwt 2.5 and added &lt;inherits name=&#8221;com.smartgwt.SmartGwt&#8221;\/&gt; in myprojet.gwt.xml file.but now when i am running the project it gives me following error:[ERROR] [myprojet] &#8211; Unable to load module entry point class com.smartgwt.client.SmartGwtEntryPoint (see associated exception for detai<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/20d4f7c0761c5ebdf86624fec12b78ef?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nPrince<br \/>\ngwt google gwt2<br \/>\nI need to remove element from com.google.gwt.core.client.JsArray. Also I need to empty the JsArray. Its urgent.Can anyone help me?Thanks in advance, Gnik<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/eebc6af148d70db2b0cb2631d231faf5?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMukul Jain<br \/>\ngwt gwt2 gwt-2.4<br \/>\nI want to add a column to the datagrid in GWT, the column should show integer values. However, i cannot find any cell that can show an integer. This is my codeColumn&lt;Trade, Integer&gt; sellQuantityColumn = new Column&lt;Trade, Integer&gt;(new NumberCell(NumberFormat.getFormat(&#8220;##&#8221;))) {@Overridepublic Integer getValue(Trade object) {return object.getSellQty();}};This shows an error &#8211; The constructor Column(NumberCell) is undefined. For now, i can show this integer as a string, but is there any<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/6ba9ab70ef17889978d59bb6cbe5506b?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nDomchi<br \/>\nstring gwt gwt2<br \/>\nI&#8217;m upgrading a GWT project from GWT 1.7.1 to currently newest version 2.0.3. It seems that new GWT broke String.split(String regex) method &#8211; I get the following error on the Javascript side:this$static is undefinedThis happens in this line of my .nocache.js file:if (maxMatch == 0 &amp;&amp; this$static.length &gt; 0) {&#8230;which happens to be a part of String split method equivalent in Javascript.Is there a cure for this, apart from doing string splitting myself?<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/eaf01a3b0f700d01dd4cf51311178055?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nBrad<br \/>\njava gwt gwt2 requestfactory<br \/>\nI am using GWT 2.4 with the editor and request factory frameworks. I have a model, Trip, which has an Address &#8216;origin&#8217; and an Address &#8216;destination&#8217;. When creating a Trip via the UI, the two addresses are created automatically and assigned to the Trip. User fills out details and saves. For some reason, I am getting the &#8216;autobean frozen error&#8217; when trying to persist to the server. This code worked in GWT 2.3 and I cant switch back. I am hoping its not a bug in GWT 2.4. Here is some sample code of<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/b9272ed1c4cf35d3d0b7ffaa920c8398?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGameBuilder<br \/>\njava gwt gwt2 flextable<br \/>\nI am learning GWT In in first row of flexTable i have added combobox, combobox , text box , AddButton , Remove button.On click event of addButton 2 row is added to the flexTable withe same component as first. ( combobox, combobox , text box , AddButton , Remove button.)ans so on.now what i have to do is to write a code for removing the row on the click event of removeButton when click on any add button the similar row is added.now what i want is when i click removebutton same row show be dele<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/0673bc3f3c93d3ffa1125cdf6f4ab9b1?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nArvind<br \/>\nsmartgwt gwt2<br \/>\nI am using Smart GWT 3.0- specifically I am working with the rotate sample that uses drawing class.I have changed the triangle drawn, and instead want to show a image in its place- I want this image to rotate in the same way as the other shapes are rotated when the user clicks on slider ( as shown in showcase)There is no error shown in eclipse after I have modified the code and saved it.I have changed the triangle shape code and replaced it with the following&#8211;DrawImage drawImg= new DrawImage();<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/lxvYl.jpg?s=32&amp;g=1\" \/><br \/>\nFotinopoulos Giorgos<br \/>\nregex gwt gwt2<br \/>\nI use the following in GWT to find the backslash from a string and replace with \\\\.String name = &#8220;\\path\\item&#8221;; name = RegExp.compile(&#8220;\/\\\\\/g&#8221;).replace(name, &#8220;\\\\\\\\&#8221;);But it does not work, because for name=\\path\\item returns name=\\path\\item.ok i follow the recomendation of Thomas Broyer and the first RegExp.compile(&#8220;\\\\&#8221;, &#8220;g&#8221;).replace(bgPath, &#8220;\\\\\\\\&#8221;) gives:Caused by: com.google.gwt.core.client.JavaScriptException: (SyntaxError): trailing \\ in regular expressionat com.google.gwt.dev.shell.BrowserChan<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/0a60412055b8718c35578808fef55611?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nrestless<br \/>\ngoogle-app-engine gwt gwt-rpc gwt2<br \/>\nI get the following error while calling my GWT RPC function, com.google.gwt.user.client.rpc.StatusCodeException: 500I did add the remoteservicepath and also servlet name and mapping in my web.xml, but i get the error Could not initialize class com.logins.server.Putquestion Caused by:java.lang.NoClassDefFoundError at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)at java.lang.reflect.Constructor.ne<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/b9272ed1c4cf35d3d0b7ffaa920c8398?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGameBuilder<br \/>\ngoogle-app-engine gwt gwt2<br \/>\nI was using appengine-java-sdk 1.5.3. My web application Project was working fine.I configured the Sdk and add new sdk 1.6.3I got many errors in Problem window.The App Engine SDK JAR appengine-api-1.0-sdk-1.6.3.1.jar is missing in the WEB-INF\/lib directory lib \/project\/war\/WEB-INF Unknown Google App Engine ProblemThe App Engine SDK JAR appengine-api-labs-1.6.3.1.jar is missing in the WEB-INF\/lib directory lib \/project\/war\/WEB-INF Unknown Google App Engine ProblemThe App Engine SDK JAR<\/li>\n<li>\n<img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/ff128b858393d783bf1301b564553171?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nShoaib<br \/>\ngwt gwt2<br \/>\nI&#8217;m writing a module in GWT. It uses a WYSIWYG editor. It was running smoothly until I tried using RichText from GWT instead of WYSIWYG editor. Since it did not workout as expected, I rolled back to the old code (i.e. WYSIWYG). But now, when I run the compiled html file in a browser, I get an error Error: a is null Source File: http:\/\/www.xxxxx.com\/sandbox\/rss-manager\/rss_manager\/88DF3622F3340D0F082021E59419F325.cache.html Line: 1022It isn&#8217;t showing any errors during compile time either. Its har<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-12-02 21:06:37. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>SCK gwt2 Hi Just going through GWT 2.5, came across ErrorHandler, which can be added to a widget which has implemented hasErrorHanlder. Can anyone help me in understanding.I am trying to write new Custom widget by extending the Compoiste if i implement HasErrorHanlders interface it helps me to catch what ever errors occur in this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1868","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=1868"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1868\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=1868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=1868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=1868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}