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Java Java Basics Getting Started with Java Strings, Variables, and Formatting

Posted by david mitchell
david mitchell
105 Points

Cant get the format specifier %s to work. console.printf(firstName +"can not write in Java :-(");

Cant get the format specifier %s to work.

console.printf(firstName +"can not write in Java :-(");

Name.java 
String firstName = "David";// I have setup a java.io.Console object for you named console

console.printf(firstName 's'" Can code in Java!");

1 Answer

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

printf can be a bit confusing!

String firstName = "David";
console.printf("%s can code in Java", firstName);

Inside the string you have one format specifier for each variable you want to interpolate into the String.

%s is for replacement by a String variable, %d for an int variable, %f for a float, etc.

But the bottom line is that there's one String, with the format specifiers inside it, in the positions you want the variables' values to appear.

david mitchell
david mitchell
105 Points

Why thank you very much kind sir.