25 lines
833 B
Java
25 lines
833 B
Java
// generics/ArrayOfGeneric.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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public class ArrayOfGeneric {
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static final int SIZE = 100;
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static Generic<Integer>[] gia;
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@SuppressWarnings("unchecked")
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public static void main(String[] args) {
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// Compiles; produces ClassCastException:
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//! gia = (Generic<Integer>[])new Object[SIZE];
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// Runtime type is the raw (erased) type:
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gia = (Generic<Integer>[])new Generic[SIZE];
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System.out.println(gia.getClass().getSimpleName());
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gia[0] = new Generic<>();
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//! gia[1] = new Object(); // Compile-time error
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// Discovers type mismatch at compile time:
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//! gia[2] = new Generic<Double>();
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}
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}
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/* Output:
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Generic[]
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*/
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