Check if given string is a number (digits only) : Digit Number « Regular Expressions « Java

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Java » Regular Expressions » Digit Number

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Check if given string is a number (digits only)




public class Main {



  public static boolean isNumber(String string) {

    return string.matches("^\\d+$");

  }



  public static void main(String[] args) {

    System.out.println(isNumber("123"));

  }

}

Related examples in the same category

1.	Check if given string is numeric (-+0..9(.)0...9)
2.	Check if given string is number with dot separator and two decimals
3.	Match number
4.	Match a single digit
5.	Matcher Pattern number

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