27 lines
516 B
Java
27 lines
516 B
Java
// containers/ApplesAndOrangesWithGenerics.java
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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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// Using for-in:
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for(Apple c : apples)
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System.out.println(c.id());
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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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0
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1
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2
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*/
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