38 lines
904 B
Java
38 lines
904 B
Java
// patterns/doubledispatch/TypedBin.java
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// (c)2021 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://OnJava8.com for more book information.
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// A List 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 class TypedBin {
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private List<Trash> typedBin =
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new ArrayList<>();
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public final String type;
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public TypedBin(String type) {
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this.type = type;
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}
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public List<Trash> bin() {
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// Returns a copy of typedBin:
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return new ArrayList<Trash>(typedBin);
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}
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protected boolean addIt(Trash t) {
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typedBin.add(t);
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return true;
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}
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public boolean add(Aluminum a) {
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return false;
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}
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public boolean add(Paper a) {
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return false;
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}
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public boolean add(Glass a) {
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return false;
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}
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public boolean add(Cardboard a) {
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return false;
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}
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}
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