Question

For this assignment, you will apply what you learned in analyzing a simple Java™ program by writing your own Java™ program. The Java™ program you write should do the following:

• Display a prompt on the console asking the user to type in his or her first name
• Construct the greeting string "Hello, nameEntered!"
• Display the constructed greeting on the console

Complete this assignment by doing the following:

1. Download and unzip the linked zip file.
2. Add comments to the code by typing your name and the date in the multi-line comment header.
3. Replace the following lines with Java™ code as directed in the file:
   • LINE 1
   • LINE 2
   • LINE 3
   • LINE 4
4. Comment each line of code you add to explain what you intend the code to do.
5. Test and modify your Java™ program until it runs without errors and produces the results as described above.

Here is the code and please add comments

import java.util.Scanner;

public class PRG420Week1_CodingAssignment {
  
public static void main(String[] args) {
// Create a usable instance of an input device
LINE 1. INSTANTIATE AN INSTANCE OF SCANNER AND ASSIGN IT TO A VARIABLE OF TYPE SCANNER.

// Prompt user for input
LINE 2. USE THE PRINT() METHOD TO PROMPT THE USER FOR HIS OR HER FIRST NAME.

// Capture first word and assign it to A VARIABLE
LINE 3. USE THE NEXT() METHOD OF YOUR SCANNER INSTANCE TO ASSIGN A VALUE TO A STRING VARIABLE.

// Construct the greeting
LINE 4. USE THE PRINTLN() METHOD TO CONSTRUCT A CORRECTLY PUNCTUATED GREETING.

}
  
}

Answer 1

Java code

============================================================================================

package sat;

import java.util.Scanner;

public class PRG420Week1_CodingAssignment {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       String st;
       // Create a usable instance of an input device
       Scanner sc = new Scanner(System.in);

       // Prompt user for input
       System.out.print("Enter first name: ");

       // Capture first word and assign it to A VARIABLE
       st=sc.next();

       // Construct the greeting
       System.out.println("Hello,"+st+"!");
   }

}

============================================================================================

Output