Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Basics Getting Started with Java IO

IO question.

so im trying to get the first name to print out in the box output below. The instructions up to this point have been on workspaces which uses input and output functions and the instructions and lessons all work when input and output are given, how do i inject the name into variable that this system will understand?

// I have imported java.io.Console for you.  It is a variable called console.
String firstName = console.readLine ("firstName");
String lastName = console.readLine ("lastName");
console.printf = ("firstName:Anthony");

1 Answer

Seth Kroger
Seth Kroger
56,413 Points

First off, printf is a method. Like readLine you call it by using the parentheses, not assigning it with the equals sign. You can pass printf any number of arguments but the first one needs to be a string of what you want to print. Any "%s" in the string is used as a placeholder for a string variable. After the string you put a list, separated by commas, of the variable to put in the place of one "%s" in the order they appear.