Chapter 3: Java Basics - Primitive Types and String

3.1: Storage Type

3.2: Primitive Types

3.3: High-Precision Numbers

3.4: Associate Wrapper

3.5: Casting Primitive Objects

3.6: Explicitly Indicate the Type of a Primitive Constant

3.7: Automatic Primitive Type Promotion in Calculation

3.8: Converting Between String and byte Array

3.9: Class String is Immutable

3.10: String Operator "+"

3.11: Length and Index of String