Question

(Obtaining Substrings) Write a program that prompts the user to enter full name contains the first name, middle name and last name separated by a space and extract the first name, middle name and last name from the input string.

Here is a sample run:

Enter the name: Dennis MacAlistair Ritchie

First Name: Dennis

Middle Name: MacAlistair

Last Name: Ritchie

JAVA

Answer 1

ExtractName.java

/** java.util package is imported to use Scanner class to accept input from the user */
import java.util.Scanner;

/** Program to extract firstname, middlename and lastname from fullname */
public class ExtractName
{
public static void main(String[] args)
{
/** Create an object of Scanner class */
Scanner sc = new Scanner(System.in);

/** Accept full name from the user */
System.out.print("Enter FullName with FirstName, MiddleName, LastName separated by space :: ");
String name = sc.nextLine();

/** split method is used to divide a string into substrings based on any delimiter. Here the
* delimiter is space and hence it is used as name.split(" ").
* The method returns the substrings in a String array. The size of array is the number of
* substrings created by split method.
*/
String parts_of_name[] = name.split(" ");

/** Since three substrings are there in full name, they are available at locations 0,1,2*/
String firstname = parts_of_name[0];
String middlename = parts_of_name[1];
String lastname = parts_of_name[2];

/** Display the output */
System.out.println("\nFirst Name :: " + firstname);
System.out.println("Middle Name :: " + middlename);
System.out.println("Last Name :: " + lastname);
}
}
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Output: