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Using an iterator interface or for each statement in Java

Stack<String> sk = new Stack<String>();

sk.push("Hello");
sk.push("Hello1");
sk.push("Hello2");

There are two ways: I repeat this stack object.

for(String s : sk){
   System.out.println("The Values of String in SK" +sk);
}

// Way two.

Iterator<String> it=sk.iterator();
    while(it.hasNext())
    {
        String iValue=(String)it.next();
        System.out.println("Iterator value :"+iValue);
    }
  • What is the difference between the two?
  • Any advantage if I choose one of them?
  • What is the preferred way to iterate?
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6 answers

1. What is the difference between the two?

Little. The design for each loop actually relies on an iterator behind the curtains.

Further reading:

2. Any advantage if I choose one of them?

Mostly readability I would suggest.

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3. ?

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+4

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What is the preferred way to iterate?

Foreach loop

You can read the Java 5.0 Nuances for each cycle and the official tutorial for each cycle.

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