Java abstract method

Create a class named shape with abstract method named print
From this class inherit 3 classes- square,triangle,circle
Square will have 4 points with coordinate(X,Y)
Triangle will have 3 points with coordinate(X,Y)
Circle will have a point and a radius(number) with coordinate(X,Y)
implement the print method of shape to print to the console the points/radius of the shape (the properties of specific shape)
have an array of shapes with three instances of each type of shape.
Loop over the array and call print,to print each one of the shapes.
Use console input to input the data to each one of the shapes type.

Please anybody help to solve this