3.1 Expressions, Types, and Basic Math
3.2 Objects and Methods
3.3 Other Basic Types
3.4 Back to the Numbers
3.4.1 Binary Arithmetic
3.4.2 Negative Numbers in Binary
3.4.3 Other Integer Types
3.4.4 Octal and Hexadecimal
3.4.5 Non-Integer Numbers
3.5 The math Object
3.6 Details of Char and String
3.7 Naming Values and Variables
3.8 Sequential Execution
3.8.1 Comments
3.9 A Tip for Learning to Program