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Java Java Basics Getting Started with Java IO

Posted by Sean Habel
Sean Habel
4,407 Points

I am constantly getting the "Ensure you included the string formatter '%s'" error, is my syntax incorrect?

From my knowledge this is used properly but is erroring out, have I made a mistake I cannot spot?

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

2 Answers

Matthew Hardy
Matthew Hardy
4,063 Points
Matthew Hardy
Matthew Hardy
4,063 Points

The method printf allows for a formatted string to be directly entered into it, you have no need for String.format. Simply typing console.printf("First name: %s",firstName); will get the job done with no problems!

Sean Habel
Sean Habel
4,407 Points

Thank you so much Matthew!

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hey Sean,

I'm not sure why you added String.format() to the console.printf() call. "printf" itself is used to print a formatted string. So, just delete that extra code and you're good to go. 

console.printf("First name: %s",firstName);

Keep Coding! :) :dizzy:

Sean Habel
Sean Habel
4,407 Points

Thank you Jason!