Java ListIterator set() Method

Last Updated : 17 Mar 2025

The set() method of ListIterator interface is used to replace the last element which is returned by the next() or previous() along with the given element. The call can be added only if neither remove() nor add(E) method have been called.

Syntax

Parameters

The above method requires only one parameter:

The element 'e' which needs to be replaced.

Return

Throws:

UnsupportedOperationException- If the given set operation is not supported by the list iterator.

ClassCastException- If the given class of the specified element is not supported by the list iterator.

IllegalArgumentException- If some of the aspects of the given element avoid it from being added to the list.

IllegalStateException- If neither the next() nor the previous() method has been called.

Example 1

import java.util.ArrayList;
import java.util.ListIterator;
public class JavaListIteratorsetExample1 {
   public static void main(String[] args) {
	   ArrayList <String> name = new ArrayList<>();
	   name.add("Ravi");
	   name.add("Tina");
	   name.add("Payal");
	   name.add("Aashi");
       System.out.println("The list of the names of the students is given as: "+name);
       System.out.println("Before using the set() method : ");
       ListIterator<String> iterator = name.listIterator();
       while (iterator.hasNext()) {
           System.out.println(iterator.next());
       }
       iterator.set("None");
       System.out.println("After using the set() method : ");
       for (String item : name) {
           System.out.println(item);
       }
   }
}

Output:

The list of the names of the students is given as: [Ravi, Tina, Payal, Aashi]
Before using the set() method : 
Ravi
Tina
Payal
Aashi
After using the set() method : 
Ravi
Tina
Payal
None

Example 2

import java.util.ArrayList;
import java.util.ListIterator;
public class JavaListIteratorsetExample2 {
     public static void main(String[] args) {
    	 ArrayList <Float> obj = new ArrayList<>();
    	 obj.add(44.7f);
    	 obj.add(67f);
  	     obj.add(78f);
  	     obj.add(98.9f);
         System.out.println("The list of marks of the students is given as: "+obj);
         System.out.println("Before using the set() method : ");
         ListIterator<Float> iterator = obj.listIterator();
         while (iterator.hasNext()) {
             System.out.println(iterator.next());
         }
         iterator.set(12.4f);
         System.out.println("After using the set() method : ");
         for (Float item : obj) {
             System.out.println(item);
         }
     }
  }

Output:

The list of marks of the students is given as: [44.7, 67.0, 78.0, 98.9]
Before using the set() method : 
44.7
67.0
78.0
98.9
After using the set() method : 
44.7
67.0
78.0
12.4

Example 3

import java.util.ArrayList;
import java.util.ListIterator;
public class JavaListIteratorsetExample3 {
   public static void main(String[] args) {
	   ArrayList <Long> sub = new ArrayList<>();
	      sub.add(23l);
	      sub.add(56l);
	      sub.add(34l);
	      sub.add(98l);
       System.out.println("The list of numbers of the students is given as: "+sub);
       System.out.println("Before using the set() method : ");
       ListIterator<Long> iterator = sub.listIterator();
       while (iterator.hasNext()) {
           System.out.println(iterator.next());
       }
       iterator.set(12l);
       System.out.println("After using the set() method : ");
       for (Long item : sub) {
           System.out.println(item);
       }
   }
}

Output:

The list of age of the students is given as: [23, 56, 34, 98]
Before using the set() method : 
23
56
34
98
After using the set() method : 
23
56
34
12

Next TopicJava ListIterator

← prev next →

We deliver comprehensive tutorials, interview question-answers, MCQs, study materials on leading programming languages and web technologies like Data Science, MEAN/MERN full stack development, Python, Java, C++, C, HTML, React, Angular, PHP and much more to support your learning and career growth.

Contact info

G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India

hr@tpointtech.com

+91-9599086977

Interview Questions

Python Java Data Structure C++ C HTML JavaScript jQuery SQL Power BI

Online Compilers

C Compiler R Compiler C++ Compiler PHP Compiler Java Compiler HTML Editor Swift Compiler Python Compiler JavaScript Editor TypeScript Editor

Latest Post | Tutorials List | Privacy Policy | About Us | Contact Us

Java ListIterator set() Method

Syntax

Parameters

Return

Throws:

Example 1

Example 2

Example 3

Contact info

Follow us

Top Tutorials

Interview Questions

Online Compilers

Java String Methods

Java Array Class

Java Math Methods

ArrayList Methods

Java List Methods

Java Thread Methods

Java Date Class

Java Collection Methods

Java ListIterator Class

Java NIO Tutorial

HttpURLConnection

Java Deque

Java HttpCookie Class

Java URL class

Java Vector class

Java Socket Class

Java Executors

Java Integer Class

Java IdentityHashMap

Java ArrayBlockingQueue

Java Timestamp

Java Spliterator

Java Bitset

Java Instant

Java Compiler Class

Java AtomicInteger Class

Java AtomicLong Methods

Java Authenticator

Java BigDecimal class

Big Integer Class

Java Boolean class

Java Byte Class

Java Class

Java Collections class

CopyOnWriteArrayList

LinkedBlockingDeque

Java Long class

LinkedTransferQueue

Java List

Java MulticastSocket

Java Number Class

Java Phaser Class

Java ListIterator set() Method

Syntax

Parameters

Return

Throws:

Example 1

Example 2

Example 3

Related Posts

Subscribe to Tpoint Tech

Contact info

Follow us

Top Tutorials

Interview Questions

Online Compilers