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

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

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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