May 5, 2016 · Java.util.ArrayList.indexOf(Object) method it will return the index position of first occurrence of the element in the list. Or. java.util.ArrayList.Contains(Object o) The above method will return true if the specified element available in the list.

Apr 4, 2025 · Java itself provides several ways of finding an item in a list: List exposes a method called contains: As the name suggests, this method returns true if the list contains the specified element, and returns false otherwise. So when we need to check if a specific item exists in our list, we can: if (customers.contains(james)) { // ...

Searching for an element in an ArrayList in Java can be done using several methods, including contains(), indexOf(), lastIndexOf(), loops, and streams. Each method has its own use cases and advantages. By understanding these methods, you can effectively search for elements in your ArrayList based on the specific requirements of your application.

The ArrayList class is a resizable array, which can be found in the java.util package. The difference between a built-in array and an ArrayList in Java, is that the size of an array cannot be modified (if you want to add or remove elements to/from an array, you have to create a new one).

Mar 12, 2025 · Write a Java program to search for a specific string in an ArrayList using binary search after sorting the list. Write a Java program to implement a case-insensitive search for an element in an ArrayList using streams.

May 10, 2022 · Learn how to search for an element in an ArrayList in Java with detailed examples and explanations.

In this tutorial, we have covered several methods for searching strings in an ArrayList, including linear search, using the contains method, and implementing a custom search function. We also provided practical examples to demonstrate each approach.

I'm trying to figure out the best way to search a customer in an ArrayList by its Id number. The code below is not working; the compiler tells me that I am missing a return statement.

Searching for an element in an ArrayList is a fundamental operation in Java. It helps in determining whether a specific element is present in the list or not. In this blog post, we will look at how to search for an element in an ArrayList using the …

Aug 16, 2022 · Binary Search. Illustration: Input: ArrayList:[1, 2, 3, 4, 6, 7, 8, 9] key:3 Output: true. Case 1: Use Binary Search Because the list is sorted in order and Binary Search has less average time complexity as compared to Linear Search i.e O(logn).