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Questions tagged [vaadin8]

Vaadin 8 is the last primarily GWT-based version of Vaadin, an open-source Java web application framework. EOL Feb 2022, extended maintenance commercially available until Feb 2032.

Vaadin 8 is the last primarily GWT-based version of Vaadin, an open-source Java web application framework. Free support for Vaadin 8 ends in February 2022, extended maintenance commercially available until February 2032.

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Vaadin 7 project won't load in version 8

I developed a web app two years ago with Vaadin 7 and now I'm trying to run it with the latest plugin for Eclipse. The main servlet is asking me to implement some new methods, which seem to be important, and the thing won't load.
Eight Rice
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Vaadin 8. Resource cannot be resolved

I tried to add an overlay plugin. https://vaadin.com/directory/component/overlays I have a problem with image overlay. Im getting that error: The type com.vaadin.terminal.Resource cannot be resolved. It is indirectly referenced from required .class…
Anna K
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Vaadin Validate date, not empty

Im trying to write validation in Vaadin but I don't understand how to check if date field is empty I wrote something like this @Override public void setConfiguration(EditorConfiguration editorConfiguration) { boolean required =…
Anna K
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Validate Radiobuttons in Vaadin

Could someone tell me please how can I get value from radiobutton to validate it? I tried something like this: binder = new Binder<>(); SelectionItemConverter selectionItemConverter = new…
Anna K
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Vaadin8 Declarative not working as expected with NativeSelect

I used the following 4 lines of code setting up a NativeSelect in a vaadin java web application successfully and the NativeSelect menu was created and populated by my enum (ApplicationStatus). When I tried to do the same thing in a declarative file,…
user8716782
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Error with running vaadin 8 on Jetty8

I just migrated my application from vaadin 7 to vaadin 8.1.4. When I run my application on Jetty 8, I get the following error(only once). Application seems to be working fine, but now sure how can I get rid of this error 2017-10-02…
user1631306
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How to prevent “null” text in Binder using withConverter method on Vaadin

How to prevent show text "null" when using Binder withConverter method TextField id = new TextField("Id"); TextField name = new TextField("Name"); Binder b = new Binder<>(); b.forField(id) …
Carlos Laspina
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How to integrate Angular 4 with Vaadin framework

I want to use Angular 4 with a Vaadin 8 Java application in order to push a considerable amount of UI logic to client-side, reduce server round trips, make the client-side functionality available during slow network connections, and make use of the…
Thilina Ashen Gamage
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Error after migrating vaadin 7 to 8

I just used https://vaadin.com/docs/framework/v8/migration/migrating-to-vaadin8.html to migrate my application from vaadin 7 to vaadin 8.1.4. I was able to compile the widgetset file, but when I am trying to run the application on tomcat 8, I am…
user1631306
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Vaadin FileDownload requires the button be clicked twice to download

I'm following the Vaadin sample code but when I do I require a second click to start the file download. Below is my code: final StreamResource streamResource = new StreamResource( () -> { return new ByteArrayInputStream("hello…
Stephane Grenier
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Error while migrating from vaadin 7 to vaadin 8

I am migrating my application from vaadin 7 to vaadin 8 and following exactly same steps mentioned in the link But I am getting error Error: Could not find or load main class com.google.gwt.dev.Compiler when I run following command to compile the…
user1631306
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Thumbnails not rendering correctly in Vaadin Grid in Chrome

I'm using the latest version 8.1.4 of Vaadin. The code is simple consists of three columns where one column is an Image component. When that row is selected the Image component changes the image to another row's image for the grid. Eventually after…
Stephane Grenier
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Vaadin :remove scroll bar from description

I have set description for some components using setDescription("This is the tooltip"). Some descriptions are English but some other are in persian language. Vaadin shows a scroll bar for persian descriptions: How can i remove this scroll bar?…
HoseinPanahi
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Vaadin cannot find my theme files

I was just trying to do normal stuff when I got this error INFO: Requested resource [/VAADIN/themes/mytheme/styles.css] not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to…
Auscyber
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How to deploy a vaadin+spring boot jar properly in a single jar?

I have a Maven project that depends on spring-boot and all the Vaadin required dependencies. The structure of the project is: src/ main/ java/ (all java files here) resources/ (all properties/yml files here for Spring) …
Manish Patel
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