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Collection Iterate Example

In this Example you will learn you will learn how to iterate collection in java.

Collection Iterate Example


In this section, you will get the detailed explanation about the hasNext() method of interface Iterator. We are going to use hasNext() method of interface Iterator in Java. The description of the code is given below for the usage of the method.

Description of the code:

Here, you will get to know about the hasNext() method through the following java program. True is return by this method in case the iteration has more elements. This means that if the iteration has more elements then the hasNext() method will return true rather than throwing an exception. 

In the program code given below, we have taken a string of elements. We have converted this string of elements into a list of array and then we have applied the hasNext() method which returns true because there are more elements in the list. Hence we get the following output.

Here is the code of program:

import java.util.*;

public class hasNext{
  public static void main (String args[]) {
  boolean b;
  String elements[] = {"Blue""Grey""Teal"};
  Set s = new HashSet(Arrays.asList(elements));
  Iterator i = s.iterator();
  if (b = i.hasNext()){

Output of the program:


C:\unique>java hasNext


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Posted on: April 16, 2007 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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