Gain an unshakeable foundation in Java syntax, object lifecycle, memory allocation (Stack vs Heap), Garbage Collection mechanics, Encapsulation, Polymorphism, and Exception hierarchies.
Writing maintainable enterprise Java code requires more than knowing simple syntax loops; it requires understanding object lifetime, memory reference models, and proper object-oriented abstraction.
In this program, you will write clean Java programs from scratch, implementing custom class hierarchies, abstract classes, interfaces, method overloading/overriding, and robust try-catch-finally exception handling models.
JDK vs JRE vs JVM. Bytecode compilation, ClassLoader subsystem, Memory Areas (Heap, Stack, Method Area, PC Registers), Primitive Data Types, Operators, and Control Flow execution.
Classes, Objects, Constructors, 'this' and 'super' keywords. Encapsulation (Access Modifiers), Inheritance (IS-A relationship), Polymorphism (Overloading vs Overriding), and Composition (HAS-A relationship).
Designing Abstract classes vs Interfaces. Multiple inheritance via interfaces, Default and Static methods in interfaces (Java 8+), Packages, Import statements, and Access level restrictions.
Throwable hierarchy: Checked vs Unchecked Exceptions. Try-catch-finally blocks, Try-with-resources, Custom Exceptions, StackOverflowError vs OutOfMemoryError, and Garbage Collection mechanics.
