How to Delete User Defined Objects from LinkedHashSet? Last Updated : 28 Jun, 2021 Comments Improve Suggest changes Like Article Like Report The LinkedHashSet is an ordered version of HashSet that maintains a doubly-linked List across all elements. When the iteration order is needed to be maintained this class is used. When iterating through a HashSet the order is unpredictable, while a LinkedHashSet lets us iterate through the elements in the order in which they were inserted. Example: Input: ["Geeks", "for", "geeks"] DELETE = "geeks" Output: "Geeks" "for" Input: [1, 2, 3, 4, 5] DELETE = 2 Output: [1, 3, 4, 5] There are two ways by which we can delete elements from LinkedHashSet: Using remove() MethodUsing clear() Method Method 1: remove() methods are used to delete a specific element from a LinkedHashSet object. Syntax: LinkedHashSet.remove(Object O) Parameters: The parameter O is of the type of LinkedHashSet and specifies the element to be removed from the LinkedHashSet. Return Value: This method returns True if the specified element is present in the LinkedHashSet otherwise it returns False. Java // Java program to delete user defined // objects from LinkedHashSet import java.util.*; public class GFG { public static void main(String[] args) { LinkedHashSet<String> lset = new LinkedHashSet<String>(); // add elements to HashSet lset.add("GEEKS"); lset.add("FOR"); lset.add("GEEKS"); // Displaying the LinkedHashSet Before Deleting System.out.println("Before deleting an element :"); System.out.println(lset); // remove() method to delete an element from // LinkedHashSet lset.remove("FOR"); // Displaying the LinkedHashSet After Deleting System.out.println("After deleting an element:"); System.out.println(lset); } } OutputBefore deleting an element : [GEEKS, FOR] After deleting an element: [GEEKS] Method 2: clear() method is used to delete all element from LinkedHashSet. The set will be empty after this call returns. Syntax: public void clear() Return Value: This method does not return anything. Below are the examples to illustrate the clear() method. Java // Java program to delete elements // from LinkedHashSet import java.util.*; import java.util.LinkedHashSet; public class GFG { public static void main(String[] args) { LinkedHashSet<String> l_set = new LinkedHashSet<String>(); // add elements to HashSet l_set.add("GEEKS"); l_set.add("FOR"); l_set.add("GEEKS"); // Displaying the LinkedHashSet Before Deleting System.out.println("Before deleting an element :"); System.out.println(l_set); // clear() method to delete all element from // LinkedHashSet l_set.clear(); // Displaying an empty LinkedHashSet After Deleting System.out.println("After deleting all element:"); System.out.println(l_set); } } OutputBefore deleting an element : [GEEKS, FOR] After deleting all element: [] Comment More infoAdvertise with us Next Article How to Delete User Defined Objects from LinkedHashSet? aksrathod07 Follow Improve Article Tags : Java Java Programs java-LinkedHashSet Practice Tags : Java Similar Reads How to Find User Defined Objects From LinkedHashSet in Java? 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