gs gs128 Java Autoboxing - Liskovs Principle - Quiz No.1

 interface ICust { } class RegularCustomer implements ICust { } class OneTimeCustomer implements ICust { } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Square square = new Square(); shape = square; System.out.println(shape.area()); } } 

 public class Shape { public int area() { return 1; } } public class Rectangle extends Shape { public int area() { return 3; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Rectangle rect = new Rectangle(); shape = rect; System.out.println(shape.area()); } } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Square square = new Square(); square = shape; System.out.println(square.area()); } } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } public class Rectangle extends Shape { public int area() { return 3; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Square square = new Square(); Rectangle rect = new Rectangle(); rect = (Rectangle)shape; System.out.println(square.area()); } } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } public class Rectangle extends Shape { public int area() { return 3; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Square square = new Square(); Rectangle rect = new Rectangle(); rect = (Rectangle)square; System.out.println(square.area()); } } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } public class Rectangle extends Shape { public int area() { return 3; } } class Main() { public static void main(String[] args) { Shape shape = new Shape(); Square square = new Square(); Rectangle rect = new Rectangle(); rect = (Rectangle)square; System.out.println(square.area()); } } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } public class Rectangle extends Shape { public int area() { return 3; } } public static void main(String[] args) { Shape shape = new Square(); shape = new Rectangle(); System.out.println(shape.area()); } 

 public class Shape { public int area() { return 1; } } public class Square extends Shape { public int area() { return 2; } } public class Rectangle extends Shape { public int area() { return 3; } } public static void main(String[] args) { Shape square = new Square(); Shape rect = new Rectangle(); square = rect; System.out.println(square.area()); }