List contains() method in Java with Examples

The contains() method of List interface in Java is used for checking if the specified element exists in the given list or not.

Example:

List contains 2 : true
List contains 3 : false

Syntax of Method

public boolean contains(Object obj)

• Parameters: This method accepts a single parameter obj whose presence in this list is to be tested.
• Return Value: It returns true if the specified element is found in the list else it returns false.

Practical Application : In search operations, we can check if a given element exists in a list or not.

Example of List contains() Method

Below programs illustrate the contains() method in List:

Program 1: Demonstrate the working of the method contains() in List of integer.

The list contains 2
The list does not contains 5

Program 2: Demonstrate the working of the method contains() in List of string.

The list contains geeks
The list does not contains coding

Reference: Click here to check the official document