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java:inheritance
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| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
|
java:inheritance [2021/03/05 17:26] gthanos |
java:inheritance [2021/04/02 14:19] gthanos |
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| Line 10: | Line 10: | ||
| <code java BasicRectangle.java> | <code java BasicRectangle.java> | ||
| - | class BasicRectangle { | + | public |
| | | ||
| int width; | int width; | ||
| int height; | int height; | ||
| - | public | + | public |
| width = initWidth; | width = initWidth; | ||
| height = initHeight; | height = initHeight; | ||
| } | } | ||
| - | void setWidth(int newWidth ) { | + | |
| width = newWidth; | width = newWidth; | ||
| } | } | ||
| | | ||
| - | void setHeight(int newHeight ) { | + | |
| height = newHeight; | height = newHeight; | ||
| } | } | ||
| | | ||
| - | int getWidth() { | + | |
| return width; | return width; | ||
| } | } | ||
| | | ||
| - | int getHeight() { | + | |
| return height; | return height; | ||
| } | } | ||
| Line 39: | Line 39: | ||
| return width * height; | return width * height; | ||
| } | } | ||
| + | |||
| + | public String toString() { | ||
| + | return " | ||
| + | } | ||
| } | } | ||
| </ | </ | ||
| Line 76: | Line 79: | ||
| <code java Rectangle.java> | <code java Rectangle.java> | ||
| - | class Rectangle extends BasicRectangle{ | + | public |
| | | ||
| Point origin; | Point origin; | ||
| Line 90: | Line 93: | ||
| } | } | ||
| | | ||
| - | void setOrigin(Point newOrigin) { | + | |
| origin = newOrigin; | origin = newOrigin; | ||
| } | } | ||
| | | ||
| - | Point getOrigin() { | + | |
| return origin; | return origin; | ||
| } | } | ||
| // Move rectangle origin by dx,dy | // Move rectangle origin by dx,dy | ||
| - | void moveOrigin(int dx, int dy) { | + | |
| origin.setX( origin.getX() + dx ); | origin.setX( origin.getX() + dx ); | ||
| origin.setY( origin.getY() + dy ); | origin.setY( origin.getY() + dy ); | ||
| + | } | ||
| + | | ||
| + | public String toString() { | ||
| + | String str = origin.toString() + " "; | ||
| + | str = str + super.toString(); | ||
| + | return str; | ||
| } | } | ||
| } | } | ||
java/inheritance.txt · Last modified: 2022/03/11 05:21 by gthanos
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