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

what is printf


// I have setup a java.io.Console object for you named console
String firstName = "YOUR NAME";
console.printf("%s\n", firstName);

2 Answers

It is a format method...you alwas uses this with the string formater (when you use the %s) More information: https://docs.oracle.com/javase/tutorial/java/data/numberformat.html https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html

It is used for formated output It is used for string inheritance

printf() is a method (don't worry about what a method is right now) used to print output to the console. Without the console.printf(...) you would not see the output on your screen; it would be blank.

So someone else wrote code for printf() and you are using it to print output to your screen/console.