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Shay Paustovsky
4,281 PointsFormat Specifiers - Java
I didn't understand the format specifiers and parameters in/for the printf(); functions I understood it replaces the string but nothing more than that. If someone could explain this to me please I would be thankful. :)
2 Answers
Kent Åsvang
18,823 PointsIt isn't really much more than that to understand. It is just a way of getting variables and other input within a string. e.g., if you have this variables :
String name = "Bob";
int age = 24;
..and you want to output this variables to the console, theres a couple of ways to do it. One way is concatenate it directly within the string, like this:
System.out.printf(bob + " is " + age + " years old.");
another way is to use the format specifiers:
System.out.printf("%s is %d years old", name, age);
My preference is the latter, since it is cleaner and more compact. A lot of concatenation can look pretty messy.
Here are som reading material: https://alvinalexander.com/programming/printf-format-cheat-sheet
Hope this helped you in some way.
Shay Paustovsky
4,281 PointsThank you Kent, I understood the format specifiers as I was learning further. I guess it's something that you understand when you actually encounter it.
Have a nice day!