Class Point
Public x, y As Integer
Public Sub New(ByVal x As Integer, ByVal y As Integer)
Me.x = x
Me.y = y
End Sub
Public Overrides Function Equals(ByVal obj As Object) As Boolean
Dim objType As Type = obj.GetType()
Dim meType As Type = Me.GetType()
If Not objType.Equals(meType) Then
Return False
End If
Dim other As Point = CType(obj, Point)
Return Me.x = other.x AndAlso Me.y = other.y
End Function
Public Overrides Function GetHashCode() As Integer
Return x XOr y
End Function
Public Overrides Function ToString() As String
Return String.Format("({0}, {1})", x, y)
End Function
Public Function Copy() As Point
Return CType(Me.MemberwiseClone(), Point)
End Function
End Class
Public Class App
Shared Sub Main()
Dim p1 As New Point(1, 2)
Dim p2 As Point = p1.Copy()
Dim p3 As Point = p1
Console.WriteLine([Object].ReferenceEquals(p1, p2))
Console.WriteLine([Object].Equals(p1, p2))
Console.WriteLine([Object].ReferenceEquals(p1, p3))
Console.WriteLine("p1's value is: {0}", p1.ToString())
End Sub
End Class
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