LinkedHashSet clear() method in Java with Examples

Last Updated : 11 Jul, 2025
The clear() method of java.util.LinkedHashSet class is used to remove all of the elements from this set. 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. Example 1: Java 
// Java program to demonstrate
// clear() method
// for Integer value

import java.util.*;

public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {

            // Create the object of LinkedHashSet<Integer>
            LinkedHashSet<Integer>
                linkset = new LinkedHashSet<Integer>();

            // populate hash set
            linkset.add(10);
            linkset.add(20);
            linkset.add(30);

            // print the LinkedHashSet
            System.out.println("LinkedHashSet: "
                               + linkset);

            // clear set values
            // using clear() method
            linkset.clear();

            // print the LinkedHashSet
            System.out.println("LinkedHashSet after "
                               + "use of clear() method: "
                               + linkset);
        }

        catch (NullPointerException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}
Output: 
LinkedHashSet: [10, 20, 30]
LinkedHashSet after use of clear() method: []
Example 2: Java 
// Java program to demonstrate
// clear() method
// for String value

import java.util.*;

public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {

            // Create the object of LinkedHashSet<Integer>
            LinkedHashSet<String>
                linkset = new LinkedHashSet<String>();

            // populate hash set
            linkset.add("A");
            linkset.add("B");
            linkset.add("C");

            // print the LinkedHashSet
            System.out.println("LinkedHashSet: "
                               + linkset);

            // clear set values
            // using clear() method
            linkset.clear();

            // print the LinkedHashSet
            System.out.println("LinkedHashSet after "
                               + "use of clear() method: "
                               + linkset);
        }

        catch (NullPointerException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}
Output: 
LinkedHashSet: [A, B, C]
LinkedHashSet after use of clear() method: []
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