24 lines
610 B
Java
24 lines
610 B
Java
// collections/ApplesAndOrangesWithGenerics.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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import java.util.*;
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public class ApplesAndOrangesWithGenerics {
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public static void main(String[] args) {
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ArrayList<Apple> apples = new ArrayList<>();
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for(int i = 0; i < 3; i++)
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apples.add(new Apple());
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// Compile-time error:
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// apples.add(new Orange());
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for(Apple apple : apples) {
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System.out.println(apple.id());
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}
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}
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}
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/* Output:
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0
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1
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2
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*/
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