Java: Check if a particular element exists in a linked list

Last update on May 22 2025 13:15:55 (UTC/GMT +8 hours)

22. Check Element Exists

Write a Java program to check if a particular element exists in a linked list.

Sample Solution:-

Java Code:

import java.util.*;
public class Exercise22 {
 public static void main(String[] args) {
  // create an empty linked list
  LinkedList <String> c1 = new LinkedList <String> ();
            c1.add("Red");
          c1.add("Green");
          c1.add("Black");
          c1.add("White");
          c1.add("Pink");
          System.out.println("Original linked list: " + c1);
           
     // Checks whether the color "Green" exists or not.
    if (c1.contains("Green")) {
       System.out.println("Color Green is present in the linked list.");
    } else {
       System.out.println("Color Green is not present in the linked list.");
     }
    
     // Checks whether the color "Orange" exists or not.
    if (c1.contains("Orange")) {
       System.out.println("Color Orange is present in the linked list.");
    } else {
       System.out.println("Color Orange is not present in the linked list.");
     }
    
 }
}

Sample Output:

Original linked list: [Red, Green, Black, White, Pink]                 
Color Green is present in the linked list.                             
Color Orange is not present in the linked list.

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to search for an element in a linked list using a loop and return its index if found.
• Write a Java program to use Java streams to check if a given element exists in a linked list.
• Write a Java program to implement a recursive search for a specified element in a linked list.
• Write a Java program to check if an element exists in a linked list and print a custom message if not found.

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