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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()){
      System.out.println(b);
      }
      }
}

Output of the program:

C:\unique>javac hasNext.java

C:\unique>java hasNext
true

C:\unique>

Download this example.

 

                         

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Current Comments

10 comments so far (post your own) View All Comments Latest 10 Comments:

I want a complete java project please send for me.
Regards;

Posted by saeid on Friday, 01.30.09 @ 10:23am | #84332

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Posted by harmeet on Saturday, 08.11.07 @ 12:32pm | #23160

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Plz continue with more useful tutorials and examples
on Springs&Hibernate..

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Posted by nayabrasool on Tuesday, 08.7.07 @ 17:36pm | #22871

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Posted by Gayan on Wednesday, 07.18.07 @ 11:10am | #21489

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Posted by Kristi on Friday, 03.23.07 @ 20:22pm | #12573

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Posted by Chaitanya on Tuesday, 02.20.07 @ 14:53pm | #8474

I need lot Iterator examples.

Posted by Ramanathan on Friday, 01.26.07 @ 13:01pm | #4401

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bye
ramesh.u

Posted by ramesh.u on Tuesday, 01.2.07 @ 18:55pm | #2435
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