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

string formatter

Do you have to use a %s, or will %d work? Could i substitute any letter? It passed the exercise, but programming mentor said I shouldn't be able to do that.

// I have setup a java.io.Console object for you named console
String firstName = "Jami";
System.out.printf("%d can code in Java!",  firstName);

1 Answer

Lee Reynolds Jr.
Lee Reynolds Jr.
5,160 Points

You can't substitute any letter into the examples. You'll learn why in later lessons but the letter that follows the "%" sign does matter to Java. It just happens that in this case you are able to but the "d" stands for decimals if I'm not mistaken and the "s" for string.