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AbstractSequentialList clear() method in Java with Example

  • Last Updated : 24 Dec, 2018

The clear() method of AbstractSequentialList in Java is used to remove all the elements from a list. The list will be empty after this call returns.

Syntax:

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public void clear()

Parameters: This function has no parameters.

Returns: The method does not return any value. It removes all the elements in the list and makes it empty.



Below examples illustrates the AbstractSequentialList.clear() method:

Example 1:




// Java code to demonstrate the working of
// clear() method in AbstractSequentialList
  
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // creating an AbstractSequentialList
        AbstractSequentialList<Integer> arr
            = new LinkedList<Integer>();
  
        // using add() to initialize values
        // [1, 2, 3, 4]
        arr.add(1);
        arr.add(2);
        arr.add(3);
        arr.add(4);
  
        // list initially
        System.out.println("The list initially: "
                           + arr);
  
        // clear function used
        arr.clear();
  
        // list after clearing all elements
        System.out.println("The list after "
                           + "using clear() method: "
                           + arr);
    }
}
Output:
The list initially: [1, 2, 3, 4]
The list after using clear() method: []

Example 2:




// Java code to demonstrate the working of
// clear() method in AbstractSequentialList
  
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // creating an AbstractSequentialList
        AbstractSequentialList<String> arr
            = new LinkedList<String>();
  
        // using add() to initialize values
        // [Geeks, For, ForGeeks, GeeksForGeeks]
        arr.add("Geeks");
        arr.add("For");
        arr.add("ForGeeks");
        arr.add("GeeksForGeeks");
  
        // list initially
        System.out.println("The list initially: "
                           + arr);
  
        // clear function used
        arr.clear();
  
        // list after clearing all elements
        System.out.println("The list after "
                           + "using clear() method: "
                           + arr);
    }
}
Output:
The list initially: [Geeks, For, ForGeeks, GeeksForGeeks]
The list after using clear() method: []



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