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Java Java Basics Getting Started with Java IO

Posted by markelkins
markelkins
340 Points

Seems to be syntax but i am getting the following error message:

I am getting the following error message: ..."Did you forget to pass the firstName parameter to the printf function?"....

I should see the error today ....but I am apparently blind. Your help is appreciated! Thanks, Mark

IO.java 
// I have imported java.io.Console for you.  It is a variable called console.
String firstName = "";
String lastName = "";
console.readLine("What is your first name?\n  ", firstName);
console.readLine("What is your last name?\n   ", lastName);
console.printf("First name:%s\n", firstName);

3 Answers

Unsubscribed User
Unsubscribed User
7,176 Points
Unsubscribed User
Unsubscribed User
7,176 Points

Hi :)

Maybe you get that the error because your String is still empty. I've never tried your way of getting input from the user/keyboard but that is how I would do it:

         // I have imported java.io.Console for you.  It is a variable called console.
String firstName = "";
String lastName = "";
firstName = console.readLine("What is your first name?\n  ");
lastName = console.readLine("What is your last name?\n   ");
console.printf("First name:%s\n", firstName);

Let me know if my answer was helpful, if not, let me also know ;-)

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

Try this: 

// I have imported java.io.Console for you.  It is a variable called console.
String firstName = console.readLine("What is your first name? ");
String lastName = console.readLine("What is your last name? ");
console.printf("First name: %s", firstName);
markelkins
markelkins
340 Points
markelkins
markelkins
340 Points

Hey Patrick and EVERYONE!, Sorry EVERYONE, it as taken me a few days to respond to your help. THANK YOU! My personal life got in the way of my fun. Patrick I believe your suggestion is correct. I realized that the readLine function within the class Console is a correct method of retrieving user input. The issue is I fail to assign a value to the strings correctly. That is lastName = console.readLine("What is your last name?\n "). I had established the instance of a string variable, initialized it to a blank value, but failed to correctly use an assignment statement to transfer the user input into the string variable.

Thank you and everyone else for your help. This is the first time I have asked the community for help and I have to say you folks are great! If would very much welcome if anyone has anymore input.

....By the way how is the job market out there. I have a BSPE degree from UC Berkeley and a BSCS from CalPoly. BUT I have worked in a related field for 10 years, primarily on control systems and embedded logic controllers. No java or the such in that field. So it is a couple months of refresher courses for me. Thanks again, Mark