Java 26-Day Course

Understand the characteristics of the Java language and set up the development environment from JDK installation to running your first program.

Understand Java's 8 primitive types and reference types, and learn how to declare and initialize variables.

Learn arithmetic, comparison, and logical operators, and understand the difference between implicit and explicit type conversion.

Learn branching with if-else and switch statements, and explore Java 14+'s enhanced switch expressions.

Learn how to use for, while, and do-while loops, and control flow with break and continue.

Learn how to declare and use one-dimensional and multi-dimensional arrays, along with the enhanced for loop.

Learn key methods of the String class and efficient string handling with StringBuilder.

Learn method definition, parameter passing, overloading, and recursion concepts and usage.

Learn the fundamentals of OOP including class design, constructors, and the this keyword.

Learn access modifiers (public, private, protected, default) and encapsulation using getters/setters.

Learn the concepts of class inheritance, the super keyword, method overriding, and the Object class.

Learn the principles and practical applications of polymorphism through upcasting, downcasting, and instanceof.

Understand the differences between abstract classes and interfaces, and learn multiple implementation patterns.

Learn robust error handling with try-catch-finally, checked/unchecked exceptions, and custom exceptions.

Learn the differences between ArrayList and LinkedList, key List interface methods, sorting and searching.

Learn the characteristics and usage of HashSet, TreeSet, HashMap, and TreeMap with practical examples.

Learn generic classes, methods, and wildcards to write type-safe code.

Learn lambda expression syntax and key functional interfaces (Function, Predicate, Consumer, Supplier).

Learn data processing pipelines using Stream API, intermediate/terminal operations, and Collectors.

Learn file reading/writing with java.nio, the Path API, and directory traversal.

Learn database connectivity, CRUD operations, PreparedStatement, and transaction handling with JDBC.

Understand and compare Maven and Gradle project structures, dependency management, and build lifecycles.

Learn unit test writing with JUnit 5, including annotations, assertions, and parameterized tests.

Learn Spring Boot core concepts: IoC/DI, auto-configuration, and building a simple web application.

Design and implement a complete REST API with Spring Boot, including DTOs, service layer, exception handling, and validation.

Build a complete Spring Boot-based Todo REST API from scratch, using everything learned over the course.