Accenture
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HashMap is non-synchronized and allows null values, while Hashtable is synchronized and does not allow null values.
HashMap is non-synchronized and not thread-safe, while Hashtable is synchronized and thread-safe.
HashMap allows null values for both key and value, while Hashtable does not allow null keys or values.
HashMap is faster than Hashtable as it is non-synchronized.
HashMap is part of the Java Collections Framework
Types of exceptions in Selenium include NoSuchElementException, ElementNotVisibleException, StaleElementReferenceException, TimeoutException, and WebDriverException.
NoSuchElementException: Thrown when an element could not be found in the DOM.
ElementNotVisibleException: Thrown when an element is present in the DOM but not visible.
StaleElementReferenceException: Thrown when an element is no longer attached to the DOM.
Tim...
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, fields, and non-abstract methods, while interface cannot.
A class can implement multiple interfaces but can only inherit from one abstract class.
Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for classes ...
I applied via Referral and was interviewed before Jun 2022. There was 1 interview round.
SQL queries are used to interact with relational databases by retrieving, updating, and manipulating data.
Use SELECT statement to retrieve data from tables
Use INSERT statement to add new data to tables
Use UPDATE statement to modify existing data in tables
Use DELETE statement to remove data from tables
Use JOIN clause to combine data from multiple tables
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
I applied via Walk-in and was interviewed before Jul 2021. There was 1 interview round.
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