80 lines
1.4 KiB
Java
80 lines
1.4 KiB
Java
//: reusing/PlaceSetting.java
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// Combining composition & inheritance.
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import static net.mindview.util.Print.*;
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class Plate {
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Plate(int i) {
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print("Plate constructor");
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}
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}
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class DinnerPlate extends Plate {
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DinnerPlate(int i) {
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super(i);
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print("DinnerPlate constructor");
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}
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}
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class Utensil {
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Utensil(int i) {
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print("Utensil constructor");
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}
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}
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class Spoon extends Utensil {
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Spoon(int i) {
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super(i);
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print("Spoon constructor");
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}
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}
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class Fork extends Utensil {
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Fork(int i) {
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super(i);
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print("Fork constructor");
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}
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}
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class Knife extends Utensil {
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Knife(int i) {
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super(i);
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print("Knife constructor");
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}
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}
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// A cultural way of doing something:
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class Custom {
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Custom(int i) {
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print("Custom constructor");
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}
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}
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public class PlaceSetting extends Custom {
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private Spoon sp;
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private Fork frk;
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private Knife kn;
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private DinnerPlate pl;
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public PlaceSetting(int i) {
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super(i + 1);
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sp = new Spoon(i + 2);
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frk = new Fork(i + 3);
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kn = new Knife(i + 4);
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pl = new DinnerPlate(i + 5);
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print("PlaceSetting constructor");
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}
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public static void main(String[] args) {
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PlaceSetting x = new PlaceSetting(9);
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}
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} /* Output:
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Custom constructor
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Utensil constructor
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Spoon constructor
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Utensil constructor
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Fork constructor
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Utensil constructor
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Knife constructor
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Plate constructor
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DinnerPlate constructor
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PlaceSetting constructor
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*///:~
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