信管网cnitpm493877469***: [回复] (1) extend shape (2)xcircle (3)xcircle() (4)displayit() (5)shape (6)getshapeinstance(inttype)
信管网cnitpm550475768***: [回复] 1)implements icircle
2)circle
3)circle
4)display()
5)shape
6)poit,
信管网cnitpm575198503***: [回复] (1)implement (2)shape (3)xcircle() (4)display() (5)circle (6)getshapeinstance(inttype)
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