20 lines
511 B
Java
20 lines
511 B
Java
// strings/IntegerMatch.java
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// (c)2020 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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public class IntegerMatch {
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public static void main(String[] args) {
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System.out.println("-1234".matches("-?\\d+"));
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System.out.println("5678".matches("-?\\d+"));
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System.out.println("+911".matches("-?\\d+"));
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System.out.println("+911".matches("(-|\\+)?\\d+"));
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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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