Collections enumeration() method in Java with Examples Last Updated : 08 Jun, 2021 Comments Improve Suggest changes Like Article Like Report The enumeration() method of java.util.Collections class is used to return an enumeration over the specified collection. This provides interoperability with legacy APIs that require an enumeration as input.Syntax: public static Enumeration enumeration(Collection c) Parameters: This method takes the collection c as a parameter for which an enumeration is to be returned.Return Value: This method returns an enumeration over the specified collection.Below are the examples to illustrate the enumeration() methodExample 1: Java // Java program to demonstrate // enumeration() method // for String value import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { try { // creating object of List<String> List<String> arrlist = new ArrayList<String>(); // Adding element to srclst arrlist.add("Ram"); arrlist.add("Gopal"); arrlist.add("Verma"); // Print the list System.out.println("List: " + arrlist); // creating object of type Enumeration<String> Enumeration<String> e = Collections.enumeration(arrlist); // Print the Enumeration System.out.println("\nEnumeration over list: "); // print the enumeration while (e.hasMoreElements()) System.out.println("Value is: " + e.nextElement()); } catch (IllegalArgumentException e) { System.out.println("Exception thrown : " + e); } catch (NoSuchElementException e) { System.out.println("Exception thrown : " + e); } } } Output: List: [Ram, Gopal, Verma] Enumeration over list: Value is: Ram Value is: Gopal Value is: Verma Example 2: Java // Java program to demonstrate // enumeration() method // for Integer value import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { try { // creating object of List<Integer> List<Integer> arrlist = new ArrayList<Integer>(); // Adding element to srclst arrlist.add(20); arrlist.add(30); arrlist.add(40); // Print the list System.out.println("List: " + arrlist); // creating object of type Enumeration<Integer> Enumeration<Integer> e = Collections.enumeration(arrlist); // Print the Enumeration System.out.println("\nEnumeration over list: "); // print the enumeration while (e.hasMoreElements()) System.out.println("Value is: " + e.nextElement()); } catch (IllegalArgumentException e) { System.out.println("Exception thrown : " + e); } catch (NoSuchElementException e) { System.out.println("Exception thrown : " + e); } } } Output: List: [20, 30, 40] Enumeration over list: Value is: 20 Value is: 30 Value is: 40 Comment More infoAdvertise with us Next Article Collections enumeration() method in Java with Examples rohitprasad3 Follow Improve Article Tags : Misc Java Java-Collections Java - util package Java-Functions +1 More Practice Tags : JavaJava-CollectionsMisc Similar Reads Java Collections emptyEnumeration()​ Method with Examples The emptyEnumeration() method of Java Collections is used to get the empty enumeration that contains no elements in Java. 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