Java Building Blocks

• Understanding the Java Class Structure
• Fields and Methods

• Comments
• Classes vs. Files

• Writing main() Method
• Understanding Package declarations and Imports

• Wildcards
• Redundant imports
• Naming Conflicts
• Creating a New Package
• Creating Objects

• Constructors
• Reading and writing Object Fields
• Instance Initializer Blocks
• Order of Initialization
• Distinguishing Between Object References and Primitives

• Primitive Type
• Reference Type
• Key Differences
• Declaring and Initializing Variables

• Declaring Multiple Variables
• Identifiers
• Understanding Default Initialization of Variables

• Local Variables 
• Instance and Class Variables
• Understanding Variable Scope
• Ordering Elements in a Class
• Destroying Objects

• Garbage Collection 
• finalize()
• Summary
• Review Questions