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

Posted by allen joass
allen joass
Courses Plus Student 375 Points

how can i format firstName using a string formater "%s"

hello sorry can you help me!

Name.java 
String firstName = " Allen ";
console.printf('%s'firstName can code in Java");

1 Answer

Brendan Whiting
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points

A couple things:

  • you need to use double quotes. Single quotes are for chars, double quotes are for strings
  • firstName, the name of the variable, should not appear in the string at all, it will be passed in as a different argument to the function, separating the arguments with a comma.
String firstName = "Allen";
console.printf("%s can code in Java", firstName);

This is telling Java to using the contents of the firstName variable to replace the "%s" placeholder.