Most Common Java list Methods
Essential Java List Methods For QA Automation Testers
In the realm of Quality Assurance (QA) automation testing, the ability to efficiently manage, manipulate, and verify data is paramount. Java, being one of the most widely used programming languages for test automation, offers a powerful toolset for handling data structures, with the List interface playing a crucial role. In this blog post, we'll explore the importance of Java List methods in QA automation testing and how they contribute to the effectiveness of test automation strategies.
The List interface is commonly implemented by classes such as ArrayList, LinkedList, and Vector. Each implementation has unique properties and is appropriate for various use cases.
For example, ArrayList enables rapid random access but may be slower to insert or remove elements in the middle, whereas LinkedList excels at frequent insertions and removals but may be less efficient for random access. For example, ArrayList enables rapid random access but may be slower to insert or remove elements in the middle, whereas LinkedList excels at frequent insertions and removals but may be less efficient for random access.
add(): - Adds an element to the end of the list.
addAll(): - Adds all elements of another list to the end of this list.
clear(): - Removes all elements from the list.
contains(): - Returns true if the list contains the specified element, false otherwise.
get(): - Returns the element at the specified index in the list.
indexOf(): - Returns the index of the first occurrence of the specified element in the list, or -1 if the element is not present.
isEmpty(): - Returns true if the list is empty, false otherwise.
iterator(): - Returns an iterator over the elements in the list.
lastIndexOf(): - Returns the index of the last occurrence of the specified element in the list, or -1 if the element is not present.
listIterator(): - Returns a list iterator over the elements in the list.
remove(): - Removes the first occurrence of the specified element from the list.
removeAll(): - Removes all occurrences of the specified element from the list.
retainAll(): - Retains only the elements in the list that are also in the specified collection.
set(): - Replaces the element at the specified index in the list with the specified element.
size(): - Returns the number of elements in the list.
sort(): - Sorts the elements in the list in ascending order.