24 lines
568 B
Java
24 lines
568 B
Java
// strings/IntegerMatch.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.stream.*;
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public class IntegerMatch {
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public static void main(String[] args) {
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String possiblyMinus = "-?\\d+";
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Stream.of(
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"-1234".matches(possiblyMinus),
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"5678".matches(possiblyMinus),
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"+911".matches(possiblyMinus),
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"+911".matches("(-|\\+)?\\d+")
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).forEach(System.out::println);
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}
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}
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/* Output:
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true
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true
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false
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true
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*/
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