40 lines
1.0 KiB
Java
40 lines
1.0 KiB
Java
// generics/InheritBounds.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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class HoldItem<T> {
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T item;
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HoldItem(T item) { this.item = item; }
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T getItem() { return item; }
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}
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class Colored2<T extends HasColor> extends HoldItem<T> {
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Colored2(T item) { super(item); }
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java.awt.Color color() { return item.getColor(); }
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}
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class ColoredDimension2<T extends Dimension & HasColor>
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extends Colored2<T> {
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ColoredDimension2(T item) { super(item); }
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int getX() { return item.x; }
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int getY() { return item.y; }
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int getZ() { return item.z; }
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}
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class Solid2<T extends Dimension & HasColor & Weight>
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extends ColoredDimension2<T> {
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Solid2(T item) { super(item); }
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int weight() { return item.weight(); }
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}
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public class InheritBounds {
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public static void main(String[] args) {
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Solid2<Bounded> solid2 =
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new Solid2<>(new Bounded());
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solid2.color();
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solid2.getY();
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solid2.weight();
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}
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}
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