Java.util.LinkedList.peekFirst() Method

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Description

The java.util.LinkedList.peekFirst() method retrieves, but does not remove, the first element of this list, or returns null if this list is empty.

Declaration

Following is the declaration for java.util.LinkedList.peekFirst() method

public E peekFirst()

Parameters

  • NA

Return Value

This method returns the first element of this list, or null if this list is empty

Exception

  • NA

Example

The following example shows the usage of java.util.LinkedList.peekFirst() method.

package com.tutorialspoint;

import java.util.*;

public class LinkedListDemo {

   public static void main(String[] args) {

      // create a LinkedList
      LinkedList list = new LinkedList();

      // add some elements
      list.add("Hello");
      list.add(2);
      list.add("Chocolate");
      list.add("10");

      // print the list
      System.out.println("LinkedList:" + list);

      // peek at the first element
      System.out.println("First element of the list:" + list.peekFirst());
   }
}

Let us compile and run the above program, this will produce the following result:

LinkedList:[Hello, 2, Chocolate, 10]
First element of the list:Hello



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