BCA-201N · Object Oriented Programming using JAVA
Unit 4
Exception Handling & Multithreaded Programming
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Unit 4 Learning Hub
Exception Handling & Multithreaded Programming
Official MJPRU BCA Unit 4: Exception Handling & Multithreaded Programming for BCA-201N (Object Oriented Programming using JAVA).
Syllabus Topics:Errors vs Exceptions in Java: Syntactic/Logical Errors, System Errors vs Recoverable Exceptional ConditionsException Class Hierarchy: java.lang.Throwable, Error Subclasses, Exception Subclasses, RuntimeExceptionChecked Exceptions (Compile-Time Enforced) vs Unchecked Exceptions (Runtime unchecked)Exception Handling Mechanism: try Block, catch Block, Execution Flow upon Exception GenerationMultiple Catch Statements: Specific-to-General Ordering Rules, Multi-Catch Syntax (Java 7+)Nested Try-Catch Blocks: Scope of Inner and Outer Exception HandlersThe finally Block: Execution Guarantee, Resource Deallocation Semantics, Execution with return StatementsExplicit Exception Generation: throw Statement, Re-throwing ExceptionsThe throws Clause: Exception Propagation, Method Header Declarations, Caller ResponsibilityCustom / User-Defined Exceptions: Subclassing java.lang.Exception, Custom Error Messages and StateMultithreading Fundamentals: Process-Based vs Thread-Based Multitasking, Context Switching AdvantagesCreating Threads: Extending java.lang.Thread Class vs Implementing java.lang.Runnable InterfaceThread Life Cycle & State Machine: New, Runnable, Blocked, Waiting, Timed Waiting, Terminated StatesThread Control Methods: start(), run(), sleep(), join(), yield(), interrupt(), isAlive()Thread Priorities: MIN_PRIORITY (1), NORM_PRIORITY (5), MAX_PRIORITY (10), Preemptive SchedulingSynchronization in Multithreading: Race Conditions, Critical Section, synchronized Methods & BlocksInter-Thread Communication: Object Monitor Locking, wait(), notify(), notifyAll(), Producer-Consumer Problem
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Introduction to Computers & The IPO Cycle
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Topic 1 · The foundation of modern computing
Introduction to Computers & The IPO Cycle
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Ready to master this concept? Give it a quick read & tap the check!
💡 The Big Picture:A computer is an electronic system that takes raw data as Input, processes it under programmed logic, and produces meaningful Information as Output.
🍪 Everyday Analogy:Think of baking cookies: Flour & Sugar (Input) ➔ The Oven (Processing) ➔ Warm Delicious Cookie (Output)! 🍪
Key Exam Takeaways
- ·Data = Raw, unprocessed facts without context (e.g. 42, 'apple').
- ·Information = Structured data with meaning (e.g. 'Temperature: 42°C').
- ·Hardware is what you can touch; Software is the instructions running inside.
Instant Knowledge Check
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Which of the following represents unprocessed raw facts?
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