Master Java's control structures, including loops and switch statements.

Implement effective exception handling with try-catch-finally and try-with-resources.

Create custom exceptions to address specific code challenges; utilize break and continue statements for efficient program flow control.

Master Java object lifecycle, including creation, reassigning, and garbage collection.

Implement inheritance, polymorphism, and method overriding effectively.

Create and utilize interfaces, functional interfaces, and enumerations.

Utilize key interfaces in the Collections API for efficient data management.

Understand and apply Java generics, including type erasure and type inferencing.

Implement sorting techniques using comparator objects and factory methods.

Master the Streams API for efficient data processing using terminal methods and laziness.

Implement Lambda expressions and method references within functional interfaces.

Utilize collectors for advanced data grouping, partitioning, and reduction.

Define modules and manage their dependencies effectively.

Utilize command-line operations for compiling and executing modular Java programs.

Implement services and control reflection within modules.

Create and manage worker threads using Runnable and Callable interfaces.

Utilize executor services for efficient thread pooling and task management.

Develop thread-safe code to address race conditions, deadlocks, and livelocks.

Establish and manage database connections using JDBC for SQL operations.

Execute and secure SQL statements with prepared and callable statements.

Master Java I/O streams for reading and writing console and file data.

Implement localization using Java locales for language and regional adaptation.

Manage multilingual resources with resource bundles for dynamic user interfaces.

Format messages, dates, times, and numbers according to local conventions.

Ensure accurate representation of currency and percentage values across locales.