Imports System
Imports System.Collections
Public Class Program
Public Shared Sub Main()
Dim st As Stack = New Stack()
st.Push("vb.net")
st.Push("c#")
st.Push("c")
st.Push("php")
st.Push("java")
Console.WriteLine(String.Join(" ", st.ToArray()))
End Sub
End Class
' run:
'
' java php c c# vb.net
'