Thread: Basic Java Question

Hi all so I'm very new to Java and am working on a project which requires my program works properly with all name inputs, but I coded it to only output what I need with one.

What I did was initialize my fullname into first and lastname using substrings, but that obviously won't work for any name because there will be a different number of characters.

Here's the code :

 
public class Proj2
{
    public static void main(String[] args)
    {
 
 
 
		 String fullname = "dAvId lAwReNt";
       String firstname;
       String lastname;
 
 
       firstname = fullname.substring(0,5);
        lastname = fullname.substring(6,13);
 
		int count = fullname.length();
 
		System.out.println("Index of Space:" + fullname.length());
 
       System.out.println("First Name: " + firstname + " has " + firstname.length() + " letters.");
 
		 System.out.println("Last Name: " + lastname + " has " + lastname.length() + " letters.");
 
 
		 firstname = firstname.toUpperCase();
		 lastname = lastname.toUpperCase(); 
 
			System.out.println("Initial of the first name in uppercase: " + firstname.charAt(0));
 
			 firstname = firstname.toLowerCase();
 
			System.out.println("Rest of the first name in lowercase: " + firstname.substring(1));
 
 
			System.out.println("Initial of the last name in uppercase: " + lastname.charAt(0));
 
			lastname = lastname.toLowerCase(); 
 
			System.out.println("Rest of the last name in lowercase: " + lastname.substring(1));
 
 
			firstname = firstname.toLowerCase();
		   lastname = lastname.toLowerCase(); 
 
 
			firstname = firstname.substring(0, 1).toUpperCase() + firstname.substring(1);
			lastname = lastname.substring(0, 1).toUpperCase() + lastname.substring(1);
 
 
 
			 System.out.println("My name is " + firstname + " " + lastname);
       }
       }

I just need to set firstname and lastname without using substrings since that won't work if i were to replace the name with another with a different amount of characters

Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for newcomers.

Originally Posted by GregBrannon

Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for newcomers.

Thanks! I edited my post.

-Also, I have figured out I need to use IndexOf but I'm not sure how to implement it.
Any help is greatly appreciated!

You might also check out String.split().

Using indexOf(), If you know the index of the space, then you know how to form the substrings which will resolve your initial concern.

I'm not allowed to use string.split yet I don't think
fullname.indexOf(fullname); Would that give me the index of the space?

I'm still a little foggy on how to initialize it after finding it


Edit:

fullname.indexOf(' ') Gives me "5" for index of space.

Hi,


For splitting the fullname you can also use stringtokenizer.

Thanks,