Destroying ColdFusion Variables Using JavaCast()

code-1.cfm

<!--- Create the objFoo variable. --->
<cfset objFoo = StructNew() />
<cfset objFoo.Bar = "Well Played!" />

<!--- Destroy struct via JavaCast(). --->
<cfset objFoo = JavaCast( "null", 0 ) />

<!--- Dump out variable. --->
<cfdump var="#objFoo#" />

code-2.cfm

<!--- Create the objFoo variable. --->
<cfset objFoo = StructNew() />
<cfset objFoo.Bar = "Well Played!" />

<!--- Destroy key via JavaCast(). --->
<cfset objFoo.Bar = JavaCast( "null", 0 ) />

<!--- Dump out variable. --->
<cfdump var="#objFoo#" />