Font Awesome demo

HTML :
<i wicket:id="inline-fa"></i> fa-camera-retro

Java :
add(new Icon("inline-fa", FontAwesome6IconType.camera_retro_s));

HTML :
<i wicket:id="large-fa"></i> fa-camera-retro
<i wicket:id="2x-fa"></i> fa-camera-retro
<i wicket:id="3x-fa"></i> fa-camera-retro
<i wicket:id="4x-fa"></i> fa-camera-retro
<i wicket:id="5x-fa"></i> fa-camera-retro


JAVA :
add(new Icon("large-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.camera_retro).size(Size.large).build()));
add(new Icon("2x-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.camera_retro).size(Size.two).build()));
add(new Icon("3x-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.camera_retro).size(Size.three).build()));
add(new Icon("4x-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.camera_retro).size(Size.four).build()));
add(new Icon("5x-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.camera_retro).size(Size.five).build()));


HTML :
<button class="btn btn-default btn-lg">
    <i wicket:id="spinner-spin-fa"></i>
</button>
<button class="btn btn-default btn-lg">
    <i wicket:id="rotate-spin-fa"></i>
</button>
<button class="btn btn-default btn-lg">
    <i wicket:id="gear-spin-fa"></i>
</button>


JAVA :
add(new Icon("spinner-spin-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.spinner).spin().build()));
add(new Icon("rotate-spin-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.rotate).spin().build()));
add(new Icon("gear-spin-fa", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.gear).spin().build()));


HTML :
<i wicket:id="shield-rotate-normal"></i>  normal
<i wicket:id="shield-rotate-90"></i>  fa-rotate-90
<i wicket:id="shield-rotate-180"></i>  fa-rotate-180
<i wicket:id="shield-rotate-270"></i>  fa-rotate-270
<i wicket:id="shield-rotate-flip-horizontal"></i>  fa-flip-horizontal
<i wicket:id="shield-rotate-flip-vertical"></i>  fa-flip-vertical

JAVA :
add(new Icon("shield-rotate-normal", FontAwesome6IconType.shield_halved_s));
add(new Icon("shield-rotate-90", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.shield_halved)
    .rotate(Rotation.rotate_90).build()));
add(new Icon("shield-rotate-180", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.shield_halved)
    .rotate(Rotation.rotate_180).build()));
add(new Icon("shield-rotate-270", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.shield_halved)
    .rotate(Rotation.rotate_270).build()));
add(new Icon("shield-rotate-flip-horizontal", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.shield_halved)
    .rotate(Rotation.flip_horizontal).build()));
add(new Icon("shield-rotate-flip-vertical", FontAwesome6IconTypeBuilder.on(FontAwesome6Solid.shield_halved)
    .rotate(Rotation.flip_vertical).build()));


If you prefer using FontAwesome-5.x, you can override the default choice by declaring the dependency on FontAwesome-5.x.y in your own project's pom.xml explicitly:

	<dependency>
		<groupId>org.webjars</groupId>
		<artifactId>font-awesome</artifactId>
		<version>5.x.y</version>
	</dependency>

Then simply use the respective classes for version 5 in your java code:

Some of the wicket-components from wicket-extensions internally use FontAwesome icons, as well. To let those components know about your choice the FontAwesome version, you need to set the CSS resource reference of your choice into the FontAwesomeSettings class, ideally in your application init method.