Some more issues in internationalization for the unwary uninitiated:  It's 
common in Java to use the period character to separate words in resource 
property names, e.g.:

repeat.password=Repeat Password

Unfortunately, this gets interpreted (by JSF, I think) as a series of 
properties, so it looks for the "repeat" property of the messages bundle when 
you use it like:

<h:outputLabel for="verify" value="#{messages.repeat.password}"/>

anonymous wrote : 
  | 11:39:44,796 ERROR [STDERR] Jul 5, 2006 11:39:44 AM 
com.sun.facelets.FaceletViewHandler handleRenderException
  | SEVERE: Error Rendering View[/register.xhtml]
  | javax.faces.el.PropertyNotFoundException: /register.xhtml @42,92 
value="#{messages.repeat.password}": Bean: java.lang.String, property: password
  |         at 
com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:58)
  |         at javax.faces.component.UIOutput.getValue(UIOutput.java:75)
  |         at 
org.apache.myfaces.renderkit.RendererUtils.getStringValue(RendererUtils.java:225)
  |     ...
  | 

Trying to change the period to a dash doesn't work either (it gets interpreted 
as subtraction):

repeat-password=Repeat Password

<h:outputLabel for="verify" value="#{messages.repeat-password}"/>

anonymous wrote : 
  | 11:45:28,968 ERROR [STDERR] Jul 5, 2006 11:45:28 AM 
com.sun.facelets.FaceletView
  | Handler handleRenderException
  | SEVERE: Error Rendering View[/register.xhtml]
  | java.lang.NumberFormatException: For input string: "repeat"
  |         at 
sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1224)
  |         at java.lang.Double.valueOf(Double.java:447)
  |         at java.lang.Double.(Double.java:539)
  |         at 
com.sun.el.lang.ELArithmetic$DoubleDelegate.coerce(ELArithmetic.java:137)
  |         at com.sun.el.lang.ELArithmetic.coerce(ELArithmetic.java:362)
  |         at com.sun.el.lang.ELArithmetic.subtract(ELArithmetic.java:285)
  |         at com.sun.el.parser.AstMinus.getValue(AstMinus.java:44)
  |         at 
com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
  |         at 
com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
  |         at 
com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
  |         at javax.faces.component.UIOutput.getValue(UIOutput.java:75)
  |         at 
org.apache.myfaces.renderkit.RendererUtils.getStringValue(RendererUtils.java:225)
  |         at 
org.apache.myfaces.renderkit.html.HtmlLabelRenderer.encodeBegin(HtmlLabelRenderer.java:105)
  |         at 
javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:307)
  |         at 
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:232)
  |         at 
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at 
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at 
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
  |         at 
com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:554)
  |         at 
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         ...
  | 

Camel-casing, e.g.

repeatPassword=Repeat Password

<h:outputLabel for="verify" value="#{messages.repeatPassword}"/>

does work as a workaround, as one might expect.

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