Validate if string is a number : Convert from String « Data Type « Java

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Java » Data Type » Convert from String

Validate if string is a number


  



public class Main {

  public static boolean checkIfNumber(String in) {

    try {

      Integer.parseInt(in);

    } catch (NumberFormatException ex) {

      return false;

    }

    return true;

  }



  public static void main(String[] args) {



    System.out.println(checkIfNumber("ABC"));

    System.out.println(checkIfNumber("123123123123123"));

  }

}

Related examples in the same category

1.	Parse a number using a NumberFormat
2.	Convert from String to integer
3.	Pass a string to the Integer class constructor and call the intValue()
4.	Parse and format a number to octal
5.	Parse and format a number to decimal
6.	Parse and format to hexadecimal
7.	Parse and format to arbitrary radix <= Character.MAX_RADIX
8.	Decode string to integer
9.	Convert string to an integer or number
10.	Declaring Checked Exceptions
11.	Converting a String to a byte Number
12.	Converting a String to a short Number
13.	Converting a String to a int(integer) Number
14.	Value Of Demo

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