21 lines
461 B
Java
21 lines
461 B
Java
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// streams/OptionalBasics.java
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import java.util.*;
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import java.util.stream.*;
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class OptionalBasics {
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static void test(Optional<String> optString) {
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if(optString.isPresent())
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System.out.println(optString.get());
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else
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System.out.println("Nothing inside!");
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}
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public static void main(String[] args) {
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test(Stream.of("Epithets").findFirst());
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test(Stream.<String>empty().findFirst());
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}
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}
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/* Output:
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Epithets
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Nothing inside!
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*/
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