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Added source files (Programmieren Tutorium)
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import java.util.LinkedList;
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public class Main {
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public static void main(String[] args) {
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LinkedList<? extends Fruit> apples = new LinkedList<Apple>();
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// I can't get apples in
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// this gives an error
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apples.add(new Apple());
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// In fact, you can only add null!
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}
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}
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