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Java Java Arrays Iteration Looping Like These Programmers

michael lee
michael lee
5,179 Points
Posted by michael lee
michael lee
5,179 Points

what am I doing wrong?

I cannot spot what is going wrong with my code, somebody help me, thanks!!

Programmers.java 
public class Programmers {

  public void printMenu() {
    String[] programmers = {
            "Yukihiro Matsumoto",
            "David Nolen",
            "Grace Hopper",
            "Linus Torvalds",
            "You"
    };
    for(int i = 0; i<programmers.length; i++){
      String programmer = programmers[i];
    System.out.println("Choose a programmer:%n %s", programmer);

    }
    // TODO: Print out a menu by looping through the programmers array.
    /*
      The menu should be in the form of (each on a line of its own, starting with 1):
      1. Yukihiro Matsumoto
      2. David Nolen
      ...
    */


  }

}

2 Answers

<noob />
<noob />
17,062 Points

hi, this is the working code; for(int i=0; i<programmers.length;i++) { System.out.printf("%d. %s %n",i+1, programmers[i]);

}

first u loop through the programmers array, every time u loop through an index in prigrammers u add 1 to i,so for example in the beggining your in i=0, then in the system.out.printf u add 1 to i and iterating the first index.

michael lee
michael lee
5,179 Points
michael lee
michael lee
5,179 Points

thanks a lot, one quick question, what is %d stand for? and what is the difference between printf and println in this case?is it interchangeable?

<noob />
<noob />
17,062 Points
<noob />
<noob />
17,062 Points

Hi, u use %s and %d for formatting. %s is for strings and %d is for numbers. the difference between printf and println is that u can only format(use %s and %d as placeholders) only with the printf command, u can’t format with println, u use println for printing each word in separate lines.

if this answer helped u, please mark as best answer.

Yali Zafar
Yali Zafar
989 Points
Yali Zafar
Yali Zafar
989 Points

ah I missed something so simple, thank you!