Question

Write a program that asks the user for three strings. Then, print out whether the first string concatenated to the second string is equal to the third string. Here are a few sample program runs:
Sample Program 1:

First string? pepper
Second string? mint
Third string? peppermint
pepper + mint is equal to peppermint!
Sample Program 2:

First string? go
Second string? fish
Third string? donuts
go + fish is not equal to donuts!
public class ThreeStrings extends ConsoleProgram
{
public void run()
{
code
}

Answer 1

Answer:

import java.util.Scanner;

public class num5 {

   public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       System.out.println("Enter The First String");

       String str1 = in.next();

       System.out.println("Enter The Second String");

       String str2 = in.next();

       System.out.println("Enter The Third String");

       String str3 = in.next();

       String oneAndTwo = str1+str2;

       if(str3.equals(oneAndTwo)){

           System.out.println(str1+" + "+str2+" is equal to "+str3+"!");

       }

       else

           System.out.println(str1+" + "+str2+" is not equal to "+str3+"!");

   }

}

Explanation:

• Implemented in Using Java Programming Language
• Import Scanner Class to prompt and receive users' input
• Create three string variables and store the three values entered by the user (str1, str2 and str3)
• Concatenate str1 and str2 using the + operator and assign to a new variable
• Use the if statement with Java's .equals() method to check for equality of the new string with the third string
• Print the appropriate message if the equal or not