iterator tag example in Struts 2

 
Struts 2 Iterator will iterate over a value. An iterable value can be any of: java.util.Iterator,java.util.Collection.
In this tutorials, we will create a list and use Iterator tag to loop over it and get the iterator status with IteratorStatus.
 
Using IteratorStatus object one can get information about the status of the iteration, such as:

index: current iteration index, starts on 0 and increments in one on every iteration
count: iterations so far, starts on 1. count is always index + 1
first: true if index == 0
last: true if current iteration is the last iteration
even: true if (index + 1) % 2 == 0
odd: true if (index + 1) % 2 == 1
 
** UPDATE: Struts 2 Complete tutorial now available here.
 

Jsp -Iterator example
 

<%@taglib prefix="s" uri="/struts-tags"%>





Simple Iterator

Iterator with Iterator Status

 
Recommended reading :

 
Action Class
 

package com.simplecode.action;

import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
import com.simplecode.form.StudentBean;

public class StudentAction extends ActionSupport
{
private static final long serialVersionUID = 1L;
private List students = new ArrayList();

public String fetchStudentList()
{
students.add(new StudentBean("o7ba062", "Lavanya", "IT", 70));
students.add(new StudentBean("o7bb040", "Jaya Prakash", "ECE", 86));
students.add(new StudentBean("o7bd047", "Sundar", "MECH", 85));
students.add(new StudentBean("o7bb039", "Ibrahim Sha", "ECE", 85));
students.add(new StudentBean("o7bb009", "Aswin", "ECE", 84));
students.add(new StudentBean("o7ba027", "Nilafar", "IT", 82));
students.add(new StudentBean("o7bc079", "Nisha", "CSC", 81));
	
return SUCCESS;
}

public List getStudents()
{
	return students;
}

public void setStudents(List students)
{
	this.students = students;
}

}

 
Demo
 

 
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