Answers for "program in java that checks if the input used is a striing and not a number"

Java

java how to check string is number

public static boolean isNumeric(String strNum) {
    if (strNum == null) {
        return false;
    }
    try {
        double d = Double.parseDouble(strNum);
    } catch (NumberFormatException nfe) {
        return false;
    }
    return true;
}

Posted by: Guest on August-10-2021

Source

java program to Check given String is contians number or not

public class ContainsExample {
   public static void main(String args[]){
      String sample = "krishna64";
      char[] chars = sample.toCharArray();
      StringBuilder sb = new StringBuilder();
      for(char c : chars){
         if(Character.isDigit(c)){
            sb.append(c);
         }
      }
      System.out.println(sb);
   }

Posted by: Guest on February-23-2022

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Answers for "program in java that checks if the input used is a striing and not a number"

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