34 lines
728 B
Java
34 lines
728 B
Java
// functional/TransformFunction.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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import java.util.function.*;
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class I {
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@Override public String toString() { return "I"; }
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}
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class O {
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@Override public String toString() { return "O"; }
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}
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public class TransformFunction {
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static Function<I,O> transform(Function<I,O> in) {
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return in.andThen(o -> {
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System.out.println(o);
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return o;
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});
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}
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public static void main(String[] args) {
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Function<I,O> f2 = transform(i -> {
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System.out.println(i);
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return new O();
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});
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O o = f2.apply(new I());
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}
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}
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/* Output:
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I
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O
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*/
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