Java for beginners - from scratch to confident programmer

Explore the concept of classes by building a box class that computes volume using width, height, and depth, and learn constructors, the new keyword, and this to reference object data.

Explore how Java control statements direct program flow, using if-else, switch, and loops for, while, and do-while, with examples of months, seasons, and nested constructs.

Explore arrays in Java, from one- to multi-dimensional initializations, with row and column printing. Learn method and constructor overloading, use this to distinguish fields, and see polymorphism.

Explore recursion and factorial with a proper halting condition. Learn methods, classes, returning objects, and access modifiers, plus static and final, getters and setters, in Java basics.

Explore practical string handling in Java, including constructing strings from char arrays and ASCII values, using length, concatenation, substring, and equalsIgnoreCase, region matches, indexOf, replace, and trim.

Learn Java multithreading, comparing process-based and thread-based multitasking, and implementing threads with Runnable interface or extending Thread. Manage the main thread, sleep, interrupt, priorities, and join for coordination.

Learn to create and run multiple Java threads with runnable, run method, and parameterized constructors, using sleep, isAlive, and join, then explore setPriority and synchronization.

Explore how synchronization controls access to shared resources using monitors and locks in Java. Implement synchronized methods and blocks, and use wait, notify, and notifyAll for producer and consumer communication.

Explore correct producer and consumer synchronization using wait and notify, understand deadlocks and how to avoid them, and learn suspending, resuming, and joining threads, plus when multithreading is beneficial.

Explore Java inheritance fundamentals by building base and derived classes, mastering access modifiers, the super keyword, and multilevel hierarchies, and learn method overriding in practice.

Explore parameter overriding and method overriding in Java, learn the super keyword for superclass method access, dynamic method dispatch, abstract classes, final methods, and the object class basics.

Explore networking basics in Java by using the java.net package to work with sockets, IP addresses, and ports, and contrast TCP and UDP for reliable and fast transport.