Iterable interface: while loop and for loop : Iterable Interface « Collections « Java Tutorial

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Java Tutorial » Collections » Iterable Interface

9. 27. 2. Iterable interface: while loop and for loop


import java.util.Arrays;

import java.util.Iterator;

import java.util.List;



public class MainClass {

  public static void main(String[] args) {

    List list = Arrays.asList("A", "B", "C", "D");

     Iterator iterator = list.iterator();

     while (iterator.hasNext () ) {

         String element = (String) iterator.next ();

         System.out.println(element);

     }



  }

}

A
B
C
D

This is identical to:


import java.util.Arrays;

import java.util.Iterator;

import java.util.List;



public class MainClass {

  public static void main(String[] args) {

    List list = Arrays.asList("A", "B", "C", "D");



    for (Iterator iterator = list.iterator(); iterator.hasNext();) {

      String element = (String) iterator.next();

      System.out.println(element);

    }



  }

}

A
B
C
D

9. 27. Iterable Interface
	9. 27. 1.	Using an Iterator
	9. 27. 2.	Iterable interface: while loop and for loop
	9. 27. 3.	'for' statement for Iterable object in JDK 5 has been enhanced.
	9. 27. 4.	Creating Iterable Objects: using a for-each for loop on an Iterable object

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