29 lines
604 B
Java
29 lines
604 B
Java
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//: patterns/doubledispatch/TypedBin.java
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// An ArrayList that can grab the right type.
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package patterns.doubledispatch;
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import patterns.trash.*;
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import java.util.*;
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public abstract class TypedBin {
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ArrayList v = new ArrayList();
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protected boolean addIt(Trash t) {
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v.add(t);
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return true;
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}
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public Iterator elements() {
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return v.iterator();
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}
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public boolean add(DDAluminum a) {
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return false;
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}
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public boolean add(DDPaper a) {
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return false;
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}
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public boolean add(DDGlass a) {
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return false;
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}
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public boolean add(DDCardboard a) {
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return false;
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}
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} ///:~
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