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Collections in JAVA | Collection Framework |

What is Collection Any group of individual objects which are represented as a single unit is known as a collection. A collection in JAVA is an interface . While Collections is a class The collection framework consists of List Queue Set List ArrayList LinkedList Vector Stack Queue PriorityQueue LinkedList Deque (Double-Ended Que) ArrayDeque Set HashSet LinkedHashSet SortedSet TreeSet Map (This is not part of the collection framework) HashMap LinkedHashMap SortedMap TreeMap Hashtable

TESTNG Execution Hierarchy| How TestNG Executes different annotations?

TestNG Execution Hierarchy TestNG follows following execution hierarchy. Suite Test Class Method Take a quick look at practical application of TestNG Annotation on Eclipse IDE Examples: Lets explore the use case in various conditions Condition 1 >> I want to open my chrome browser once before all the @test from a class = In this case I will write the selenium code to open the chrome browser in @BeforeClass method Condition 2 >> I want to open an specific URL before each test from a class = In this case I will write the selenium code to open the URL in @Beforemethod

What is Abstraction in Java - OOPS | Use case | Code for Abstraction

What is Abstraction? Abstraction is one of the OOPs concepts. Abstraction is use for data hiding. If now method in the abstract class is abstract methods still it can be an abstract class (abstract class support 0 -100% abstraction) We can not create an instance/object for a abstract class Abstract methods have only declaration () but no implementation {} Abstract method can over override and thus it support an OOPs concept call method overriding In Abstraction we have declaration once but implementation multiple times as per our needs. Example : Abstract Class with 0% abstraction abstract class Abstract{ public void A() {}; // Non Abstract Method public void B(String S ) {}; // Non Abstract Method This shows that we can create abstract class without any abstract Method Abstract Class with 100% abstraction abstract class Abstract{ abstract void A(); // Abstract Method abstract void A(String S ); // Abstract Method }

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Java for Software Automation

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