Key Concepts in HashMaps and SQLite Databases in Java

HashMaps in Java

  • Understanding the HashMap data structure in Java.
  • Key-value pairs, hashing, and principles of HashMap.

HashMap Operations

  • Performing basic operations on HashMaps: insertion, retrieval, and deletion.
  • Iterating through keys and values in a HashMap.

HashMap API

  • Exploring the HashMap class methods and functionalities in the Java API.
  • Practical use cases and examples.

Handling Collisions

  • Dealing with collisions in HashMaps and strategies for resolution.
  • Collision resolution techniques: chaining and open addressing.

Performance Considerations

  • Analyzing the time complexity of HashMap operations.
  • Choosing appropriate initial capacity and load factor for optimal performance.

SQLite Database in Java

  • Introduction to SQLite as a lightweight relational database management system.
  • Setting up and connecting to an SQLite database in Java.

JDBC (Java Database Connectivity)

  • Utilizing JDBC for database operations in Java.
  • Establishing connections, executing queries, and handling results.

Creating and Managing Tables

  • Designing and creating tables in an SQLite database.
  • Defining data types, constraints, and relationships.

CRUD Operations

  • Implementing CRUD (Create, Read, Update, Delete) operations with SQLite in Java.
  • Translating Java objects to database records and vice versa.

Prepared Statements

  • Using prepared statements for efficient and secure database operations.
  • Preventing SQL injection vulnerabilities.

Transactions

  • Understanding database transactions and their role in ensuring data integrity.
  • Implementing atomic operations and rollback mechanisms.

Querying the Database

  • Writing SQL queries to retrieve specific data from the database.
  • Utilizing SELECT statements with conditions and joins.

Connection Pooling

  • Implementing connection pooling for efficient database connections.
  • Enhancing performance and scalability in database operations.

Error Handling and Exception Management

  • Handling database-related errors and exceptions in Java.
  • Implementing robust error-handling strategies.

Best Practices and Optimization

  • Adhering to best practices for efficient HashMap and SQLite database usage.
  • Optimizing queries and data access for better performance.

Make sure to adapt these concepts based on your specific project requirements and use cases.