OnJava8-Examples/generics/CreatorGeneric.java

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// generics/CreatorGeneric.java
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// (c)2017 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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abstract class GenericWithCreate<T> {
final T element;
GenericWithCreate() { element = create(); }
abstract T create();
}
class X {}
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class XCreator extends GenericWithCreate<X> {
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@Override
X create() { return new X(); }
void f() {
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System.out.println(
element.getClass().getSimpleName());
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}
}
public class CreatorGeneric {
public static void main(String[] args) {
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XCreator xc = new XCreator();
xc.f();
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}
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}
/* Output:
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X
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*/