21 lines
559 B
Java
21 lines
559 B
Java
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// collections/GenericTypeInference.java
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// (c)2021 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://OnJava8.com for more book information.
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// {NewFeature} Since JDK 11
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import java.util.*;
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public class GenericTypeInference {
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void old() {
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ArrayList<Apple> apples = new ArrayList<>();
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}
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void modern() {
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var apples = new ArrayList<Apple>();
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}
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void pitFall() {
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var apples = new ArrayList<>();
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apples.add(new Apple());
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apples.get(0); // Comes back as plain Object
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}
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}
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