28 lines
892 B
Java
28 lines
892 B
Java
// generics/GenericArrayWithTypeToken.java
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// ©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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import java.lang.reflect.*;
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public class GenericArrayWithTypeToken<T> {
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private T[] array;
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@SuppressWarnings("unchecked")
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public GenericArrayWithTypeToken(Class<T> type, int sz) {
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array = (T[])Array.newInstance(type, sz);
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}
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public void put(int index, T item) {
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array[index] = item;
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}
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public T get(int index) { return array[index]; }
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// Expose the underlying representation:
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public T[] rep() { return array; }
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public static void main(String[] args) {
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GenericArrayWithTypeToken<Integer> gai =
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new GenericArrayWithTypeToken<>(
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Integer.class, 10);
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// This now works:
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Integer[] ia = gai.rep();
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}
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}
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/* Output: (None) */
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