• What is Dependency Injection?
  • Key Terminology:
  • Traditional Object Creation vs Dependency Injection
• Why is Dependency Injection Important?
• Types of Dependency Injection
• How Does Dependency Injection Work in Spring?
  • 1. Constructor Injection in Spring
    • Configuration Using Spring Annotations
  • 2. Setter Injection in Spring
  • 3. Field Injection in Spring
• Annotation-based Configuration in Spring
• Advantages of DI in Spring
• Conclusion

• What is Pass by Value?
  • Example of Pass by Value
• What is Pass by Reference?
• How Java Handles Object Passing: Pass by Value for Object References
• Why Java is Pass by Value
  • Analogy: Copying an Address
• Key Takeaways
• Conclusion

• What is IoC?
• How does IoC work in Spring?
  • The Core Concept: Dependency Injection (DI)
  • Example of IoC with Spring
    • Step 1: Define the Interfaces and Implementations
    • Step 2: Define a Service that Depends on the Car
    • Step 3: Configure the Spring IoC Container (XML-Based Configuration)
    • Step 4: Using the Spring IoC Container to Inject Dependencies
• Benefits of IoC in Spring
  • 1. Loose Coupling
  • 2. Easier Unit Testing
  • 3. Centralized Configuration
  • 4. Improved Maintainability
• Annotation-Based Configuration (Alternative)
• Conclusion

• What Is BigDecimal?
  • Key Features:
• Creating a BigDecimal
• Common Operations with BigDecimal
  • Addition, Subtraction, Multiplication, and Division
  • Common Rounding Modes
  • Avoiding Precision Loss in Financial Applications
• Performance Considerations
• Conclusion

Introduction

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