DEV Community

loading...

Java – How to find an element in a Java List Object by Examples

loizenai profile image loizenai ・1 min read

https://grokonez.com/java/java-how-to-find-an-element-in-a-java-list-object-by-examples

Java – How to find an element in a Java List Object by Examples

[no_toc]
In the tutorial, we will show how to find an element in a List Object with Java APIs and Google Guava library.

contains()

Signature method:


boolean java.util.List.contains(Object o)

-> Returns true if the list contains at least one element e such that Objects.equals(o, e).

Example:


List integerList = Arrays.asList(1, 3, 7, 9, 11);

System.out.println(integerList.contains(3));
// true

System.out.println(integerList.contains(4));
// false

Example with Custom Object

  • Define a Customer class:

More at:

https://grokonez.com/java/java-how-to-find-an-element-in-a-java-list-object-by-examples

Java – How to find an element in a Java List Object by Examples

Discussion (0)

pic
Editor guide