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

Posted by Aryaman Kunzru
Aryaman Kunzru
928 Points

what does %s do

what does %s do

Name.java 
// I have setup a java.io.Console object for you named console

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

1 Answer

Alexander Davison
Alexander Davison
65,469 Points

Think of %s as a placeholder.

When we make a string in Java, you can put these "magical" %s stuff in them.

You can use them in strings to refer to values you don't really know yet and in the future you can replace the %s stuff with a different string.

For example if I have the string "Hello %s. How do you do?" and I insert "Alex" into it Java will replace the %s with "Alex". Then the string would look like "Hello Alex. How do you do?".

It is also a good idea to review the Strings and Variables video at around time 04:21 and pay extra attention :)

I hope this helps. ~Alex