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Java

Posted by Nicholas Brigham
Nicholas Brigham
780 Points

Why do I "need" to use an enhanced for-loop for this Java Objects objective?

Traditional for-loops are much easier for me to understand and they do the same thing. From what I have read, enhanced for-loops are also somewhat limited in their abilities compared to traditional for-loops. If I can get the objective done with a traditional for-loop then what difference does it make?

AJ Longstreet
.a{fill-rule:evenodd;}techdegree seal-36
AJ Longstreet
Treehouse Project Reviewer

If it's hard for you to understand now, it's telling you that you should be looking to fill in that knowledge gap. It will help a lot as you progress into harder concepts such as lambdas and streams.

2 Answers

Billy Trivett
Billy Trivett
642 Points
Billy Trivett
Billy Trivett
642 Points

For the average developer, if there is an easier and cleaner way to do something, then why not?

I wouldn't say that enhanced for loops are "limited." They are made so that you can have clear syntax while looping through all the data in a list.

There isn't too much difference between using regular and enhanced, but try to practice using it so you know how because other developers might find it easier to use enhanced.

Also, what do you find hard to understand about enhanced for loops?

Timothy Boland
Timothy Boland
18,237 Points

I myself am having a hard time trying to convert the following to an enhanced for loop:

String tiles = "letters";  
public int getCountOfLetter(char letter) {
      int countOfLetter = 0;
      for (int i=0; i < tiles.length(); i++)
      {
        if (tiles.charAt(i) == letter)
        {
          countOfLetter++;
        }
      }
      return countOfLetter;
    }
}

getCountOfLetter(t);

UPDATE Nevermind....I figured it out:

public int enhancedGetCountOfLetter(char letter) {
    int countOfLetter = 0;
    for (char x : tiles.toCharArray()) {
        if (x == letter) {
          countOfLetter++;
        }
    }
    return countOfLetter;
  }
}
Timothy Boland
Timothy Boland
18,237 Points
Timothy Boland
Timothy Boland
18,237 Points

Hey Bro,

I agree...ive always preferred to used the standard for loop, but here is the answer to help you figure it out:
I included a link to a video which helps explain it a little better too:

Java Programming Tutorial - 31 - Enhanced for Loop

String tiles = letters;

  public int getCountOfLetter(char letter) {
    int countOfLetter = 0;
    for (char x : tiles.toCharArray()) {
        if (x == letter) {
          countOfLetter++;
        }
    }
    return countOfLetter;
  }
}