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Thread: String Problem

  1. #1
    Junior Member
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    Question String Problem

    I have a problem with Payroll program I want to input only a alphabet for the name , if the
    user's input a number, for example, "sam4pl3" or "123 " the program will show a message "Number is not allowed" although the string is alphanumeric, then ask the user to input again, i

    thanks in advance.
        public static void main(String[] args) {
            Scanner dataIn = new Scanner(System.in);
     
            String firstName;
            String middleName;
            String lastName;
     
    	//NAME
    	System.out.print("Employees First Name: ");
            firstName = dataIn.nextLine();  //input first name 
            System.out.print("Employees Middle Name: ");
            middleName = dataIn.nextLine(); //input middle name
            System.out.print("Employees Last Name: ");
            lastName = dataIn.nextLine();   //input last name
     
    	Sample OUTPUT:
    	 Employees First Name: Juan 4 you
    	 Numbers are not allowed!
    	 Employees First Name: Juan
    	 Employees Middle Name: 143
      	 Numbers are not allowed!
    	 Employees Middle Name: 54
             Numbers are not allowed!


  2. #2
    Grand Poobah
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    Default Re: String Problem

    I don't see a question. Presumably you wish to know how to do this. You can use a regular expression and the matches method in the String class or you can iterate over the String and examine each char to see if it is a digit. The Character class has a method to help you.
    Improving the world one idiot at a time!

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