docs/
└── tutorials/
└── java/
├── index.mdx
│
├── 01-getting-started/
│ ├── what-is-java.mdx
│ ├── java-features.mdx
│ ├── jdk-jre-jvm.mdx
│ ├── install-java.mdx
│ ├── setup-vscode-intellij.mdx
│ ├── compile-and-run-java.mdx
│ └── first-java-program.mdx
│
├── 02-java-fundamentals/
│ ├── program-structure.mdx
│ ├── variables-and-constants.mdx
│ ├── primitive-data-types.mdx
│ ├── type-casting.mdx
│ ├── operators.mdx
│ ├── input-and-output.mdx
│ ├── comments-and-documentation.mdx
│ └── naming-conventions.mdx
│
├── 03-control-flow/
│ ├── if-else.mdx
│ ├── switch-statements.mdx
│ ├── for-loops.mdx
│ ├── while-and-do-while.mdx
│ ├── break-and-continue.mdx
│ ├── nested-loops.mdx
│ └── pattern-matching-basics.mdx
│
├── 04-arrays-and-strings/
│ ├── arrays.mdx
│ ├── multidimensional-arrays.mdx
│ ├── array-operations.mdx
│ ├── string-fundamentals.mdx
│ ├── string-methods.mdx
│ ├── stringbuilder-and-stringbuffer.mdx
│ ├── text-blocks.mdx
│ └── regular-expressions.mdx
│
├── 05-methods-and-functions/
│ ├── methods.mdx
│ ├── parameters-and-return-values.mdx
│ ├── method-overloading.mdx
│ ├── recursion.mdx
│ ├── varargs.mdx
│ ├── scope-and-lifetime.mdx
│ └── pass-by-value.mdx
│
├── 06-object-oriented-programming/
│ ├── classes-and-objects.mdx
│ ├── constructors.mdx
│ ├── this-and-static.mdx
│ ├── encapsulation.mdx
│ ├── inheritance.mdx
│ ├── polymorphism.mdx
│ ├── abstraction.mdx
│ ├── interfaces.mdx
│ ├── abstract-classes.mdx
│ ├── composition-vs-inheritance.mdx
│ └── object-class-methods.mdx
│
├── 07-packages-and-access-control/
│ ├── packages.mdx
│ ├── imports.mdx
│ ├── access-modifiers.mdx
│ ├── nested-classes.mdx
│ ├── enums.mdx
│ ├── annotations.mdx
│ └── modular-java.mdx
│
├── 08-exception-handling/
│ ├── exception-fundamentals.mdx
│ ├── checked-vs-unchecked.mdx
│ ├── try-catch-finally.mdx
│ ├── throw-and-throws.mdx
│ ├── custom-exceptions.mdx
│ ├── try-with-resources.mdx
│ └── exception-best-practices.mdx
│
├── 09-collections-framework/
│ ├── collections-overview.mdx
│ ├── list-and-arraylist.mdx
│ ├── linkedlist.mdx
│ ├── set-and-hashset.mdx
│ ├── map-and-hashmap.mdx
│ ├── treeset-and-treemap.mdx
│ ├── queue-and-deque.mdx
│ ├── iterators.mdx
│ ├── comparable-and-comparator.mdx
│ └── choosing-a-collection.mdx
│
├── 10-generics-and-modern-java/
│ ├── generic-classes.mdx
│ ├── generic-methods.mdx
│ ├── wildcards-and-bounds.mdx
│ ├── lambda-expressions.mdx
│ ├── functional-interfaces.mdx
│ ├── method-references.mdx
│ ├── stream-api.mdx
│ ├── optional.mdx
│ ├── records.mdx
│ ├── sealed-classes.mdx
│ ├── switch-expressions.mdx
│ └── pattern-matching.mdx
│
├── 11-file-handling-and-io/
│ ├── file-and-path.mdx
│ ├── reading-text-files.mdx
│ ├── writing-text-files.mdx
│ ├── buffered-streams.mdx
│ ├── byte-and-character-streams.mdx
│ ├── serialization.mdx
│ ├── nio-fundamentals.mdx
│ └── file-processing-project.mdx
│
├── 12-date-time-and-utilities/
│ ├── date-and-time-api.mdx
│ ├── localdate-localtime.mdx
│ ├── datetime-formatting.mdx
│ ├── math-and-random.mdx
│ ├── bigdecimal-and-biginteger.mdx
│ ├── uuid.mdx
│ └── internationalization.mdx
│
├── 13-multithreading-and-concurrency/
│ ├── threads-and-runnables.mdx
│ ├── thread-lifecycle.mdx
│ ├── synchronization.mdx
│ ├── race-conditions.mdx
│ ├── locks-and-atomic-classes.mdx
│ ├── executor-service.mdx
│ ├── futures-and-completablefuture.mdx
│ ├── concurrent-collections.mdx
│ ├── virtual-threads.mdx
│ └── concurrency-best-practices.mdx
│
├── 14-jdbc-and-databases/
│ ├── database-connectivity.mdx
│ ├── jdbc-fundamentals.mdx
│ ├── connect-to-postgresql.mdx
│ ├── connect-to-mysql.mdx
│ ├── prepared-statements.mdx
│ ├── result-sets.mdx
│ ├── transactions.mdx
│ ├── connection-pooling.mdx
│ └── repository-pattern.mdx
│
├── 15-testing-and-code-quality/
│ ├── unit-testing-fundamentals.mdx
│ ├── junit-5.mdx
│ ├── assertions-and-test-lifecycle.mdx
│ ├── mocking-with-mockito.mdx
│ ├── integration-testing.mdx
│ ├── test-driven-development.mdx
│ ├── debugging.mdx
│ ├── logging.mdx
│ └── code-quality-and-static-analysis.mdx
│
├── 16-build-tools-and-dependencies/
│ ├── project-structure.mdx
│ ├── maven-fundamentals.mdx
│ ├── gradle-fundamentals.mdx
│ ├── dependencies-and-repositories.mdx
│ ├── build-lifecycle.mdx
│ ├── environment-configuration.mdx
│ └── packaging-jar-and-war.mdx
│
├── 17-spring-and-backend-development/
│ ├── spring-framework-overview.mdx
│ ├── dependency-injection.mdx
│ ├── spring-boot-getting-started.mdx
│ ├── rest-api-development.mdx
│ ├── request-validation.mdx
│ ├── spring-data-jpa.mdx
│ ├── hibernate-and-orm.mdx
│ ├── spring-security.mdx
│ ├── authentication-and-authorization.mdx
│ ├── api-error-handling.mdx
│ └── api-documentation.mdx
│
├── 18-advanced-java/
│ ├── jvm-memory-model.mdx
│ ├── garbage-collection.mdx
│ ├── class-loading.mdx
│ ├── reflection.mdx
│ ├── annotations-processing.mdx
│ ├── performance-profiling.mdx
│ ├── design-patterns.mdx
│ ├── solid-principles.mdx
│ └── clean-architecture.mdx
│
├── 19-security-and-deployment/
│ ├── secure-coding.mdx
│ ├── input-validation.mdx
│ ├── secrets-management.mdx
│ ├── dependency-security.mdx
│ ├── dockerizing-java-apps.mdx
│ ├── environment-based-deployment.mdx
│ ├── application-monitoring.mdx
│ └── production-readiness-checklist.mdx
│
├── 20-projects/
│ ├── console-calculator.mdx
│ ├── student-management-system.mdx
│ ├── library-management-system.mdx
│ ├── expense-tracker.mdx
│ ├── employee-management-api.mdx
│ ├── task-management-rest-api.mdx
│ └── full-stack-java-application.mdx
│
├── 21-practice/
│ ├── beginner-exercises.mdx
│ ├── intermediate-exercises.mdx
│ ├── advanced-exercises.mdx
│ ├── coding-challenges.mdx
│ ├── quizzes.mdx
│ └── interview-questions.mdx
│
├── reference/
│ ├── java-syntax-cheatsheet.mdx
│ ├── collections-reference.mdx
│ ├── stream-api-reference.mdx
│ ├── exceptions-reference.mdx
│ ├── jvm-reference.mdx
│ └── glossary.mdx
│
└── assets/
├── images/
└── diagrams/