Created
April 15, 2015 05:16
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SOLID: Liskov Substitution
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| class Liskov { | |
| public static int calculateArea(Rectangle x) { | |
| return x.getHeight() * x.getWidth(); | |
| } | |
| public static int calculateArea(Square x) { | |
| return x.getHeight() * x.getHeight(); | |
| } | |
| } | |
| class Rectangle { | |
| private int height; | |
| private int width; | |
| public Rectangle (int h, int w) { | |
| setHeight(h); | |
| setWidth(w); | |
| } | |
| public void setHeight ( int value ) { | |
| this.height = value; | |
| } | |
| public void setWidth ( int value ) { | |
| this.width = value; | |
| } | |
| public int getHeight () { | |
| return this.height; | |
| } | |
| public int getWidth () { | |
| return this.width; | |
| } | |
| } | |
| class Square extends Rectangle { | |
| public Square ( int h, int w ) { | |
| super(h, w); | |
| } | |
| public void setWidth ( int value ) { | |
| super.setHeight(value); | |
| super.setWidth(value); | |
| } | |
| public void setHeight ( int value ) { | |
| this.setWidth(value); | |
| } | |
| } |
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