♦ lesson-01 (Java Core - JVM, operators, arrays, wrappers);

♦ lesson-03 (Java Core - OOP, fundamentals);

♦ lesson-04 (Java Core - OOP Inheritance & Composition);

♦ lesson-05 (Java Core - OOP - Abstract class, static, final);

♦ lesson-06 (Java Core - OOP - Interface, default & static methods);

♦ lesson-07 (Java Core - OOP - SOLID);

♦ lesson-08 (Java Core - OOP - ENUM, read console input );

♦ lesson-09 (Java Core - Exception, code convention);

♦ lesson-10 (Java Core - String);

♦ lesson-11 (Java Core - Arrays, Collections);

♦ lesson-12 (Java Core - List);

♦ lesson-14 (Java Core - Set, Queue);

♦ lesson-15 (Java Core - Map);

♦ lesson-16 (Java Core - Reflection);

♦ lesson-17 (Java Core - Inner classes);

♦ lesson-18 (Java Core - Generics);

♦ lesson-19 (Java Core-IO);

♦ lesson-22 (Java Core-Lambda,Optional);

♦ lesson-23 (Java Core-Stream);

♦ lesson-24 (Java Core - Best practice);