Welcome to Week 2. This week, we’ll begin by distinguishing between checked exceptions, unchecked exceptions, and errors, and discuss how each type affects program flow. Next, you’ll learn how to implement try-catch blocks to handle exceptions gracefully and maintain smooth application execution. We’ll cover the advantages of using exception handling for building robust and fault-tolerant applications, followed by a hands-on session where you’ll create and invoke methods that throw exceptions. Finally, you’ll get familiar with common exception classes such as NullPointerException, IOException, and ArithmeticException, and understand when and how to use them effectively. By the end of this module, you’ll be able to identify, handle, and recover from runtime anomalies in Java programs, ensuring your applications remain stable and resilient under unexpected conditions.

Welcome to this module. This week, you’ll explore how to work effectively with Strings, the StringBuilder class, and calendar data in Java. You’ll start by learning how to create and manipulate both immutable String objects and mutable StringBuilder instances to optimize performance when handling text. Next, you’ll work with calendar data to perform date and time operations essential for real-world applications. You’ll also dive into Java Collections by declaring and using ArrayList to store and manage dynamic data sets. Finally, you’ll get introduced to Lambda expressions, a key feature of Java SE 8, by writing simple functional constructs using Predicate interfaces. By the end of this module, you’ll be comfortable manipulating text, dates, and collections, and writing concise, functional-style Java code.