I want to use a link or a button like (a href="..."/>) in GWT with uiBinder.
I found the widget "hyperlink" but I don´t know how I use that.
You should use the Anchor widget.
You can use a sample ClickHandler on it to detect the click event or use the default href with the constructor :
Anchor(boolean useDefaultHref)
You can also use the setter setHref(java.lang.String href)
In UiBinder :
<g:Anchor ui:field="mylink" href="/myurl">The link test</g:Anchor>
EDIT :
To open the link in a new tab, you should use the setTarget(String target) method like the following example :
setTarget("_blank");