Java Programming Study Materials

Java syntax, data types, operators, control flow, arrays, and methods.

Classes, objects, constructors, inheritance, method overriding, and polymorphism in Java.

try-catch-finally, custom exceptions, checked vs unchecked exceptions, and best practices.

List, Set, Map, Queue — ArrayList, LinkedList, HashMap, TreeMap, and iterators.

Thread creation, synchronisation, wait-notify, Executor framework, and concurrent collections.

Byte and character streams, FileReader, FileWriter, BufferedReader, and serialisation.

Connecting Java to MySQL, CRUD operations, PreparedStatement, ResultSet, and transactions.

Lambda expressions, Stream API, Optional, default methods, and functional interfaces.

Creational (Singleton, Factory), structural (Adapter, Decorator), and behavioural (Observer, Strategy) patterns.

IoC, dependency injection, Spring Boot, REST controllers, and JPA basics.

Top Java interview questions, coding challenges, system design basics, and best practices.

Implementing linked lists, stacks, queues, trees, graphs, and heaps in Java.