Write an application that prompts the user for three first names and concatenate

Question

Write an application that prompts the user for three first names and concatenates them in every possible two-name combination so that new parents can easily compare them to find the most pleasing baby name. Save the file as BabyNameComparison.java. Write an application that allows a user to enter two Strings. Output the number of characters in the first String that also appear in the second String, and output those characters. Figure 7-20 shows two typical executions. Save the file as CountMatches.java.

Explanation / Answer

import java.util.Scanner;

public class BabyNameComparison {
public static void main(String[] args){
Scanner userInputScanner = new Scanner(System.in);
System.out.print("Enter 1st FirstName");
String name1 = userInputScanner.nextLine();
System.out.print("Enter 2nd First Name");
String name2 = userInputScanner.nextLine();
System.out.print("Enter 3rd First Name");
String name3 = userInputScanner.nextLine();

System.out.println(name1 + "" + name2);
System.out.println(name1 + "" + name3);
System.out.println(name2 + "" + name1);
System.out.println(name2 + "" + name3);
System.out.println(name2 + "" + name1);
System.out.println(name3 + "" + name2);
}
}

import java.util.Scanner;

public class CountMatches {

public static void main(String[] args) {

    Scanner inp= new Scanner(System.in);
    String str;
    char ch;
    int count=0;

    System.out.println("Enter the string:");
    str=inp.nextLine();

    while(str.length()>0)
    {
        ch=str.charAt(0);
        int i=0;

        while (i < str.length() && str.charAt(i) == ch)
        {
               count++;
                i++;
        }

        str = str.substring(count);
        System.out.println(ch);
        System.out.println(count);
    }

}

}

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