"Hello world!" -- Using data for computation -- Reading keyboard input -- Decomposing code into components -- Passing values to and from methods -- Conditions and their use for controlling the flow of programs -- For-loops -- Formatted printing using printf -- Classes String and StringBuilder -- The switch statement -- While-loops and do-while loops -- Arrays -- The class Arrays and resizing arrays -- Multidimensional arrays -- Class File -- Designing object classes -- Interfaces, inheritance, and polymorphism -- Generic class parameters and the Java Collection Framework -- Online and recursive algorithms.