20 lines
647 B
Java
20 lines
647 B
Java
// generics/GenericHolder.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 GenericHolder<T> {
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private T a;
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public GenericHolder() {}
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public void set(T a) { this.a = a; }
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public T get() { return a; }
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public static void main(String[] args) {
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GenericHolder<Automobile> h3 =
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new GenericHolder<Automobile>();
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h3.set(new Automobile()); // type checked
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Automobile a = h3.get(); // No cast needed
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//- h3.set("Not an Automobile"); // Error
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//- h3.set(1); // Error
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}
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}
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