[JAVA] Part01 - begin
[JAVA] Part02 - input
[JAVA] Part03 - control_statement
[JAVA] Part04 - array
[JAVA] Part05 - OOP_begin
[JAVA] Part06 - method
[JAVA] Part07 - constructor
[JAVA] Part08 - this
[JAVA] Part09 - static
[JAVA] Part10 - reference_array
[JAVA] Part11 - random
[JAVA] Part12 - Inheritance
[JAVA] Part13 - package
[JAVA] Part14 - access_modifier
[JAVA] Part15 - polymorphism
[JAVA] Part16 - abstract_class
[JAVA] Part17 - interface
[JAVA] Part18 - exception
[JAVA] Part19 - api
[JAVA] Part20 - generic
[JAVA] Part21 - collection_framework
[JAVA] Part22 - io