Java homework help

Question

I am working on a homework assignment for my Java class and I am stuck on one of the steps. Here's what it says: "Step 4: If the user enters fewer than two words or more than three words, display an error message. For simplicity, you can assume that each part of a name consists of a single word." I know how to write if statements that give error messages, I just don't know how to translate that in a way that basically says "if words < 2 or words > 3, display error message".
Here's the code I have so far:
import java.util.Scanner;
import java.lang.String;
public class NameParserApp {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a name: ");
String name = sc.nextLine();
int index = name.indexOf(" ");
//step 2: add code that separates the name into two or three strings depending on whether the user entered a name with two words or three
String firstName = name.substring(0, index);
String middleName = name.substring(index + 1);
String lastName = name.substring(index + 2);
//step 3: display each word of the name on a separate line
System.out.println("First name: " + firstName);
System.out.println("Middle name: " + middleName);
System.out.println("Last name: " + lastName);
//step 4: if the user enters fewer than two words or more than three words, display an error message
}
}

Answer 1

Taylor Frye
Here is the solution and no need to get index for names even you can get by accessing with index from array
https://code.sololearn.com/cspW80LwXNEJ/?ref=app

Answer 2

Taylor Frye
You can split entered name which will give you a string array and after getting length of that array you can throw error message.

Answer 3

Thanks AJ

Answer 4

AJ, ok I'll give that a try