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Introduction
You may be wondering what Iterator tags are but before going into that, let us first look into where they came from.
Strut 2
Java-based apps are typically made using Struts. It is the entire framework for tasks, including development, deployment, and maintenance. The MVC (Model View Controller)-the based framework is called Struts.
Iterator tags come under Control tags in Strut.
Iterator Tags
The Iterator tag is used in the struts web application to iterate through any collection and output any values found within. Each element in the collection is repeated through by the iterator tag, which prints the importance of each component.
The value can be any of the java.util.Collection or java.util.Iterator.
Note: To obtain information about the iteration status, such as count, even, or odd, use the IteratorStatus class. The IteratorStatus class must be declared in the status attribute of the iterator tag to access this capability.
Iterator Tag Example
index.jsp
<!DOCTYPE HTML PUBLIC "-//NINJAS HTML 4.01 Transitional//EN">
<html>
<head>
<title>Struts 2 s: Iterator Tag Example</title>
<META HTTP-EQUIV="Refresh" CONTENT="0;URL=Test.action">
</head>
<body>
</body>
</html>
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
/* This class is employed as a class for actions. */
public class Test extends ActionSupport{
// Data members
private List<String> subjectList;
// Business logic
public String execute(){
subjectList = new ArrayList<String>();
subjectList.add("java");
subjectList.add("DBMS");
subjectList.add("Networking");
subjectList.add("Compiler");
return SUCCESS;
}
// Getter
public List<String> getSubjectList() {
return subjectList;
}
public void setSubjectList(List<String> subjectList) {
this.subjectList = subjectList;
}
}
A well-liked and established web application framework based on the MVC design paradigm is Struts2. The Struts architecture has been completely rewritten in Struts2, which is more than just a new version of Struts 1.
In the Struts2 framework, what is a model?
The part in charge of managing the system's data can be found in any MVC framework model. It is not necessary for MVC to contain the model itself; alternatively, it may contain connections to one or more Models.
What do HTML struts do?
The Struts HTML Tags drawer allows you to build Struts HTML tags. These tags, along with others that are usually helpful in the building of HTML-based user interfaces, are used to create Struts input forms.
What are Iterator Tags?
Any collection can be iterated through to print values using the Iterator tag. Each element in the collection is iterated through by the iterator tag, which prints the values for each element.
Are Struts still in use?
According to estimates, at least 65 percent of the Fortune 100 firms rely on web applications created with the Apache Struts framework in 2017 despite the Apache Struts project being on the market for 18 years.
Conclusion
In this blog, we have learned about the struts and iterator tag in brief.
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