38 lines
883 B
Java
38 lines
883 B
Java
// functional/MethodReferences.java
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// ©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 MethodReferences {
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static class Description {
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String describe;
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public Description(String desc) {
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describe = desc;
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}
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public void show() { System.out.println(describe); }
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}
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public static void main(String[] args) {
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List<String> keys = Arrays.asList(
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"Every", "Good", "Boy", "Deserves", "Fudge");
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keys.forEach(System.out::println); // (1)
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List<Description> descriptions = new ArrayList<>();
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for(String k : keys)
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descriptions.add(new Description(k));
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descriptions.forEach(Description::show); // (2)
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}
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}
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/* Output:
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Every
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Good
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Boy
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Deserves
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Fudge
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Every
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Good
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Boy
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Deserves
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Fudge
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*/
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