21 lines
681 B
Java
21 lines
681 B
Java
// generics/ObjectHolder.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 ObjectHolder {
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private Object a;
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public ObjectHolder(Object a) { this.a = a; }
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public void set(Object a) { this.a = a; }
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public Object get() { return a; }
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public static void main(String[] args) {
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ObjectHolder h2 =
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new ObjectHolder(new Automobile());
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Automobile a = (Automobile)h2.get();
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h2.set("Not an Automobile");
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String s = (String)h2.get();
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h2.set(1); // Autoboxes to Integer
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Integer x = (Integer)h2.get();
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}
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}
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