21 lines
677 B
Java
21 lines
677 B
Java
// onjava/CollectionData.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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// A Collection filled with data using a generator object.
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package onjava;
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import java.util.*;
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import java.util.function.*;
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public class CollectionData<T> extends ArrayList<T> {
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public CollectionData(Supplier<T> gen, int quantity) {
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for(int i = 0; i < quantity; i++)
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add(gen.get());
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}
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// A generic convenience method:
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public static <T> CollectionData<T>
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list(Supplier<T> gen, int quantity) {
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return new CollectionData<>(gen, quantity);
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}
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}
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