23 lines
708 B
Java
23 lines
708 B
Java
// typeinfo/toys/GenericToyTest.java
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// (c)2020 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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// Testing class Class
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// {java typeinfo.toys.GenericToyTest}
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package typeinfo.toys;
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public class GenericToyTest {
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public static void
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main(String[] args) throws Exception {
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Class<FancyToy> ftClass = FancyToy.class;
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// Produces exact type:
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FancyToy fancyToy = ftClass.newInstance();
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Class<? super FancyToy> up =
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ftClass.getSuperclass();
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// This won't compile:
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// Class<Toy> up2 = ftClass.getSuperclass();
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// Only produces Object:
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Object obj = up.newInstance();
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}
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}
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