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Mapagam

40 SECTIONS · 543 TOPICS

Advanced Java Roadmap

  1. Working with Lambda Expressions

    1. 1. Creating Lambda Syntax
    2. Example: Common lambda forms
    3. 2. Using Functional Interfaces (@FunctionalInterface)
    4. Example: Custom functional interface
    5. 3. Understanding Method References (::)
    6. 4. Using Constructor References (Class::new)
    7. Example: Stream toArray with constructor ref
    8. 5. Capturing Variables
    9. 6. Understanding Lambda Scope
    10. 7. Handling Exceptions in Lambdas
    11. Example: Wrapper utility
    12. 8. Using Lambda with Collections
    13. 9. Creating Custom Functional Interfaces
    14. Example: Tri-function
    15. 10. Composing Functions
    16. Example: Pipeline composition
    17. 11. Using Predicate Composition
    18. Example: Filter chain
    19. 12. Understanding Lambda Performance Characteristics

  2. Working with Stream API

    1. 1. Creating Streams
    2. 2. Using Intermediate Operations
    3. 3. Using Terminal Operations
    4. 4. Understanding Stream Pipeline
    5. 5. Working with Primitive Streams
    6. Example: Avoid boxing
    7. 6. Using Collectors
    8. Example: Group + summarize
    9. 7. Creating Custom Collectors (Collector.of())
    10. Example: Top-N collector
    11. 8. Using Parallel Streams (parallelStream())
    12. 9. Understanding Stream Performance
    13. 10. Handling Infinite Streams
    14. 11. Using FlatMap for Nested Structures
    15. Example: Flatten orders
    16. 12. Debugging Streams (peek())
    17. 13. Using takeWhile() and dropWhile() (Java 9+)
    18. 14. Using Stream.toList() (Java 16+)

  3. Working with Optional API

    1. 1. Creating Optional
    2. 2. Checking Presence
    3. 3. Retrieving Values
    4. 4. Throwing Exceptions (orElseThrow)
    5. 5. Transforming Values
    6. Example: Chained transform
    7. 6. Filtering Optional (filter)
    8. 7. Chaining Optional Operations
    9. 8. Using ifPresent (Consumer)
    10. 9. Using ifPresentOrElse (Java 9+)
    11. Example: Branching
    12. 10. Using or() for Alternative Optional (Java 9+)
    13. Example: Cascading lookups
    14. 11. Avoiding Common Pitfalls
    15. 12. Using Optional with Streams (stream() method)
    16. Example: Filter present values

  4. Understanding Functional Programming Patterns

    1. 1. Understanding Pure Functions
    2. 2. Using Function Composition
    3. Example: Pipeline
    4. 3. Understanding Higher-Order Functions
    5. 4. Using Currying and Partial Application
    6. Example: Currying
    7. 5. Implementing Tail Recursion
    8. Example: Trampoline
    9. 6. Using Memoization
    10. Example: Generic memoize
    11. 7. Understanding Lazy Evaluation
    12. 8. Working with Immutable Collections
    13. 9. Understanding Monads
    14. 10. Implementing Map-Reduce Patterns
    15. Example: Word count
    16. 11. Using Suppliers for Deferred Execution

  5. Working with Date and Time API

    1. 1. Using LocalDate
    2. 2. Using LocalTime
    3. 3. Using LocalDateTime
    4. 4. Using ZonedDateTime
    5. 5. Using OffsetDateTime
    6. 6. Using Instant
    7. 7. Using Period and Duration
    8. 8. Formatting Dates (DateTimeFormatter)
    9. 9. Parsing Dates (parse())
    10. 10. Manipulating Dates
    11. 11. Using TemporalAdjusters
    12. Example: Next payday
    13. 12. Handling Time Zones
    14. 13. Converting Legacy Dates

  6. Understanding Generics Advanced Concepts

    1. 1. Creating Generic Classes
    2. Example: Generic container
    3. 2. Creating Generic Methods
    4. 3. Using Bounded Type Parameters (<T extends>)
    5. 4. Using Wildcards (?, extends, super)
    6. 5. Understanding PECS Principle
    7. Example: PECS in Collections.copy
    8. 6. Using Multiple Bounds (<T extends A & B>)
    9. Example: Number + Comparable
    10. 7. Understanding Type Erasure
    11. 8. Using Recursive Type Bounds (<T extends Comparable<T>>)
    12. 9. Handling Generic Arrays
    13. 10. Using Raw Types
    14. 11. Understanding Reification vs Erasure
    15. 12. Working with Type Tokens (Class<T>)
    16. Example: Super-type token

  7. Working with Annotations

    1. 1. Using Built-in Annotations
    2. 2. Creating Custom Annotations (@interface)
    3. Example: Custom annotation
    4. 3. Using Meta-Annotations
    5. 4. Setting Retention Policies
    6. 5. Defining Annotation Elements
    7. 6. Using Repeating Annotations (@Repeatable)
    8. 7. Processing Annotations at Runtime
    9. Example: Audit interceptor
    10. 8. Creating Type Annotations (@Target(TYPE_USE))
    11. 9. Understanding Annotation Inheritance
    12. 10. Using @SafeVarargs for Heap Pollution
    13. Example: Safe varargs

  8. Working with Annotation Processing

    1. 1. Understanding Annotation Processor Lifecycle
    2. 2. Creating AbstractProcessor Subclass
    3. Example: Skeleton
    4. 3. Using ProcessingEnvironment
    5. 4. Accessing RoundEnvironment
    6. 5. Generating Source Files (Filer)
    7. 6. Using JavaPoet for Code Generation
    8. Example: Generate hello class
    9. 7. Handling Compilation Errors (Messager)
    10. 8. Configuring Annotation Processors
    11. 9. Using Service Provider Interface
    12. 10. Debugging Annotation Processors
    13. 11. Understanding Incremental Processing

  9. Working with Reflection API

    1. 1. Getting Class Objects
    2. 2. Inspecting Class Members
    3. 3. Accessing Private Members (setAccessible)
    4. 4. Invoking Methods Dynamically (Method.invoke)
    5. 5. Creating Instances (Constructor.newInstance)
    6. 6. Modifying Field Values
    7. 7. Working with Annotations
    8. 8. Inspecting Generic Types (getGenericType)
    9. 9. Understanding Performance Implications
    10. 10. Using MethodHandles as Alternative
    11. Example: Lookup + invoke

  10. Working with Method Handles

    1. 1. Understanding MethodHandle API
    2. 2. Creating MethodHandles
    3. 3. Invoking MethodHandles
    4. 4. Using Method Types (MethodType)
    5. 5. Binding Methods (bindTo)
    6. 6. Creating Dynamic Call Sites
    7. 7. Understanding invokedynamic Instruction
    8. 8. Comparing MethodHandle vs Reflection
    9. 9. Using MethodHandles for Performance
    10. Example: Generated FI
    11. 10. Using VarHandle for Field Access

  11. Working with VarHandle API

    1. 1. Creating VarHandles (lookup)
    2. 2. Using Atomic Operations
    3. 3. Using Memory Ordering
    4. 4. Accessing Array Elements Atomically
    5. 5. Accessing Field Values
    6. 6. Understanding Performance Benefits vs Atomic Classes
    7. 7. Using Fence Operations
    8. 8. Understanding Plain vs Opaque vs Volatile Access
    9. 9. Using VarHandle with Arrays
    10. Example: Lock-free counter array
    11. 10. Combining VarHandle with MethodHandle

  12. Working with Records (Java 14+)

    1. 1. Creating Record Classes
    2. Example: Basic record
    3. 2. Understanding Implicit Components
    4. 3. Adding Custom Methods
    5. 4. Using Compact Constructors
    6. Example: Compact validator
    7. 5. Implementing Interfaces with Records
    8. 6. Using Records with Generics
    9. Example: Generic Pair
    10. 7. Understanding Record Restrictions
    11. 8. Serializing Records
    12. 9. Using Records in Pattern Matching
    13. Example: Record patterns (Java 21+)
    14. 10. Understanding Record Performance
    15. 11. Using Local Records (Java 16+)
    16. Example: Local record in stream

  13. Working with Sealed Classes (Java 17+)

    1. 1. Creating Sealed Classes
    2. Example: Sealed hierarchy
    3. 2. Using permits Clause
    4. 3. Understanding Subclass Modifiers
    5. 4. Using Sealed Interfaces
    6. 5. Understanding Exhaustiveness Checking
    7. 6. Using Sealed Classes with Pattern Matching
    8. Example: Exhaustive switch
    9. 7. Understanding Design Benefits
    10. 8. Combining Sealed Classes and Records
    11. Example: ADT
    12. 9. Understanding Reflection with Sealed Classes
    13. 10. Using Sealed Classes for Domain Modeling

  14. Working with Pattern Matching

    1. 1. Using Pattern Matching for instanceof (Java 16+)
    2. 2. Using Switch Expressions (Java 14+)
    3. Example: Switch expression
    4. 3. Using Pattern Matching in Switch (Java 21+)
    5. 4. Understanding Type Patterns
    6. 5. Using Guarded Patterns (when clause)
    7. Example: Guarded
    8. 6. Using Record Patterns (Java 21+)
    9. 7. Understanding Pattern Dominance
    10. 8. Using Null Patterns
    11. 9. Understanding Exhaustiveness in Switch
    12. 10. Combining Multiple Patterns
    13. 11. Using Deconstruction Patterns

  15. Working with Text Blocks (Java 15+)

    1. 1. Creating Text Blocks
    2. Example: Basic block
    3. 2. Understanding Indentation
    4. 3. Using Escape Sequences (\s, \)
    5. 4. Formatting Text Blocks
    6. 5. Using Text Blocks for JSON
    7. Example: JSON template
    8. 6. Using Text Blocks for SQL
    9. Example: SQL query
    10. 7. Using Text Blocks for HTML
    11. 8. Understanding Trailing Whitespace
    12. 9. Combining Text Blocks with String Methods
    13. 10. Using Text Blocks for XML Templates
    14. Example: SOAP envelope
    15. 11. Understanding Text Block Compilation

  16. Understanding Modern Language Features

    1. 1. Using Switch Expressions
    2. 2. Using Local Variable Type Inference (var)
    3. 3. Understanding var with Lambdas
    4. 4. Using var in Try-with-Resources
    5. Example: var with resource
    6. 5. Using Private Interface Methods (Java 9+)
    7. 6. Using Default Methods in Interfaces
    8. 7. Using Static Methods in Interfaces
    9. 8. Using Enhanced Pseudo-Random Generators (Java 17+)
    10. 9. Using Modern String Methods
    11. 10. Using Collection Factory Methods

  17. Working with Exception Handling Advanced Patterns

    1. 1. Creating Custom Exception Hierarchies
    2. Example: Domain hierarchy
    3. 2. Using Multi-Catch Blocks (Java 7+)
    4. 3. Using Try-with-Resources (AutoCloseable)
    5. 4. Handling Suppressed Exceptions (getSuppressed)
    6. 5. Understanding Exception Translation
    7. 6. Using Sneaky Throws Pattern
    8. Example: Sneaky throw
    9. 7. Wrapping Checked Exceptions in Lambdas
    10. Example: Wrapper
    11. 8. Creating Exception Handling Utilities
    12. 9. Using Result/Either Types for Functional Error Handling
    13. Example: Sealed Result
    14. 10. Understanding Stack Trace Manipulation
    15. 11. Understanding Exception Performance Implications
    16. 12. Using Chained Exceptions (initCause)

  18. Understanding Concurrency Fundamentals

    1. 1. Creating Threads
    2. 2. Understanding Thread States
    3. 3. Understanding Thread Safety
    4. 4. Using synchronized Keyword
    5. 5. Understanding Volatile Keyword
    6. 6. Using wait() and notify() (Object methods)
    7. 7. Understanding Thread Interruption
    8. 8. Using Thread.join() (waiting for completion)
    9. 9. Understanding ThreadLocal Variables
    10. 10. Understanding Memory Consistency Errors
    11. 11. Setting Thread Priority (setPriority)
    12. 12. Using Daemon Threads (setDaemon)

  19. Working with Executor Framework

    1. 1. Creating Thread Pools
    2. 2. Using ExecutorService Interface
    3. 3. Using Callable and Future
    4. 4. Configuring ThreadPoolExecutor
    5. 5. Using ScheduledExecutorService
    6. 6. Shutting Down Executors
    7. 7. Handling Rejected Tasks (RejectedExecutionHandler)
    8. 8. Using CompletionService
    9. 9. Understanding Fork/Join Framework
    10. Example: Sum array
    11. 10. Creating Custom ThreadFactory
    12. 11. Using Work-Stealing Pools

  20. Working with CompletableFuture

    1. 1. Creating CompletableFuture
    2. 2. Chaining Async Operations
    3. 3. Combining Futures
    4. 4. Handling Errors
    5. 5. Using Async Variants (thenApplyAsync)
    6. 6. Waiting for Completion
    7. 7. Combining Multiple Futures
    8. Example: Aggregate results
    9. 8. Using Custom Executors
    10. 9. Understanding Exception Propagation
    11. 10. Using CompletionStage Interface
    12. 11. Creating Timeout Handling
    13. Example: With timeout + fallback

  21. Working with Concurrent Collections

    1. 1. Using ConcurrentHashMap
    2. 2. Using CopyOnWriteArrayList
    3. 3. Using CopyOnWriteArraySet
    4. 4. Using BlockingQueue Interface
    5. 5. Using LinkedBlockingQueue
    6. 6. Using ArrayBlockingQueue
    7. 7. Using PriorityBlockingQueue
    8. 8. Using ConcurrentLinkedQueue
    9. 9. Using ConcurrentSkipListMap
    10. 10. Understanding Performance Trade-offs

  22. Working with Synchronizers

    1. 1. Using CountDownLatch
    2. Example: Wait for N workers
    3. 2. Using CyclicBarrier
    4. 3. Using Semaphore
    5. 4. Using Exchanger
    6. 5. Using Phaser
    7. 6. Understanding Use Cases for Each
    8. 7. Combining Multiple Synchronizers
    9. 8. Avoiding Common Pitfalls
    10. 9. Using LockSupport
    11. 10. Implementing Custom Synchronizers

  23. Working with Locks and Atomic Variables

    1. 1. Using ReentrantLock
    2. Example: try/finally pattern
    3. 2. Using ReadWriteLock
    4. 3. Using StampedLock
    5. 4. Understanding Lock Fairness
    6. 5. Using Condition Variables
    7. 6. Using AtomicInteger and AtomicLong
    8. 7. Using AtomicReference (object atomicity)
    9. 8. Using AtomicBoolean
    10. 9. Understanding Compare-And-Swap (CAS)
    11. 10. Using LongAdder and LongAccumulator
    12. 11. Avoiding Deadlocks
    13. 12. Using Lock-Free Algorithms

  24. Working with Virtual Threads (Java 21+)

    1. 1. Creating Virtual Threads (Thread.startVirtualThread)
    2. 2. Using Executors.newVirtualThreadPerTaskExecutor
    3. Example: Per-task executor
    4. 3. Using Thread.ofVirtual Builder
    5. 4. Understanding Virtual Thread Scheduling
    6. 5. Avoiding Pinning
    7. 6. Using Scoped Values
    8. 7. Understanding Performance Benefits
    9. 8. Migrating from Platform Threads
    10. 9. Debugging Virtual Threads
    11. 10. Understanding Carrier Threads
    12. 11. Using Virtual Threads with Blocking I/O
    13. 12. Understanding Structured Concurrency Integration

  25. Understanding Structured Concurrency (Java 21+)

    1. 1. Using StructuredTaskScope API
    2. Example: Parallel fetch
    3. 2. Creating Scoped Tasks
    4. 3. Handling Task Failures
    5. 4. Using ShutdownOnFailure Policy
    6. 5. Using ShutdownOnSuccess Policy
    7. 6. Understanding Scope Lifecycle
    8. 7. Propagating Errors and Cancellation
    9. 8. Combining with Virtual Threads
    10. 9. Implementing Custom Task Scopes
    11. Example: Collect-all scope
    12. 10. Understanding Deadline Propagation

  26. Working with NIO.2 File API

    1. 1. Using Path API
    2. 2. Working with Files API
    3. 3. Reading Files
    4. 4. Writing Files
    5. 5. Walking File Trees
    6. 6. Watching Directories (WatchService)
    7. Example: Watch directory
    8. 7. Using File Attributes
    9. 8. Working with Symbolic Links
    10. 9. Using Temporary Files and Directories
    11. 10. Understanding Memory-Mapped Files
    12. 11. Using FileSystem API
    13. Example: Read from ZIP
    14. 12. Using AsynchronousFileChannel

  27. Working with Network Programming

    1. 1. Using HttpClient API
    2. 2. Sending HTTP Requests
    3. Example: POST JSON
    4. 3. Handling HTTP Responses
    5. 4. Using Async HTTP Requests
    6. Example: Async with chain
    7. 5. Configuring HttpClient (timeouts, redirects, authenticators)
    8. 6. Working with WebSocket
    9. 7. Using ServerSocket and Socket
    10. 8. Using DatagramSocket
    11. 9. Configuring Socket Options
    12. 10. Using NIO Channels
    13. 11. Understanding Selectors
    14. 12. Implementing Non-Blocking Server
    15. Example: Selector loop

  28. Working with Serialization

    1. 1. Implementing Serializable Interface
    2. 2. Using ObjectOutputStream and ObjectInputStream
    3. 3. Understanding serialVersionUID
    4. 4. Customizing Serialization
    5. 5. Using Externalizable Interface
    6. 6. Handling transient Fields
    7. 7. Understanding Serialization Security Risks
    8. 8. Using SerialVersionUID Best Practices
    9. 9. Implementing Custom Serialization Proxies
    10. Example: Serialization proxy
    11. 10. Understanding Deserialization Vulnerabilities
    12. 11. Using Serialization Filters (ObjectInputFilter)

  29. Working with Java Modules (JPMS)

    1. 1. Understanding module-info.java
    2. Example: module-info.java
    3. 2. Using requires Directive
    4. 3. Using exports Directive
    5. 4. Using opens Directive
    6. 5. Using Qualified Exports
    7. 6. Using requires transitive
    8. 7. Using provides and uses (ServiceLoader)
    9. 8. Creating Modular JARs
    10. 9. Using --module-path
    11. 10. Working with Automatic Modules
    12. 11. Migrating Legacy Code to Modules
    13. Migration Steps
    14. 12. Using jdeps for Module Analysis

  30. Working with Module System Advanced

    1. 1. Understanding Module Layers
    2. 2. Creating Custom Module Layers
    3. Example: Plugin layer
    4. 3. Using ModuleFinder API
    5. 4. Using ModuleDescriptor
    6. 5. Using Configuration API
    7. 6. Working with Layered Modules
    8. 7. Using ModuleReader
    9. 8. Implementing Module Resolution
    10. 9. Understanding Strong Encapsulation
    11. 10. Using --add-opens and --add-exports
    12. 11. Creating Modular Applications with jlink
    13. Example: jlink command

  31. Understanding Class Loading

    1. 1. Understanding Class Loader Hierarchy
    2. 2. Using Bootstrap Class Loader
    3. 3. Using Platform Class Loader (Java 9+)
    4. 4. Using Application Class Loader
    5. 5. Understanding Parent Delegation Model
    6. 6. Creating Custom Class Loaders
    7. Example: Custom loader
    8. 7. Loading Classes Dynamically (Class.forName)
    9. 8. Understanding Class Initialization
    10. 9. Using Context Class Loader
    11. 10. Understanding Class Loader Isolation
    12. 11. Resolving Class Loading Issues

  32. Working with Instrumentation

    1. 1. Understanding Java Agent Basics
    2. 2. Creating Java Agents
    3. Example: Premain agent
    4. 3. Using Instrumentation API
    5. 4. Transforming Classes (ClassFileTransformer)
    6. Example: Transformer
    7. 5. Retransforming Classes
    8. 6. Using Byte Buddy for Instrumentation
    9. 7. Using ASM Library
    10. 8. Attaching Agents at Runtime
    11. Example: Attach API
    12. 9. Profiling with Agents
    13. 10. Understanding Security Implications

  33. Understanding JVM Memory Management

    1. 1. Understanding Memory Areas
    2. 2. Understanding Heap Structure
    3. Heap Layout (Generational GC)
    4. 3. Understanding Young Generation
    5. 4. Understanding Object Allocation (TLAB)
    6. 5. Understanding Object Promotion
    7. 6. Using Memory Flags (-Xms, -Xmx, -XX:MetaspaceSize)
    8. 7. Understanding Escape Analysis
    9. 8. Understanding Native Memory (off-heap)
    10. 9. Understanding String Interning
    11. 10. Using Compressed OOPs (-XX:+UseCompressedOops)
    12. 11. Monitoring Memory Usage
    13. 12. Detecting Memory Leaks
    14. Leak-Hunting Workflow

  34. Working with Garbage Collection

    1. 1. Understanding GC Types
    2. 2. Using G1 Garbage Collector
    3. 3. Using Low-Latency GCs
    4. 4. Configuring GC Flags (-XX:+UseG1GC, -XX:+UseZGC)
    5. 5. Understanding GC Phases
    6. 6. Understanding Stop-The-World Events
    7. 7. Monitoring GC Activity
    8. 8. Tuning GC Parameters
    9. 9. Understanding Finalization
    10. 10. Using Cleaner API
    11. Example: Cleaner
    12. 11. Understanding Reference Types
    13. 12. Using Reference Queues
    14. Example: Phantom + queue

  35. Working with JVM Diagnostics

    1. 1. Using JVM Flags (-XX:+PrintFlagsFinal)
    2. 2. Using jcmd
    3. 3. Generating Heap Dumps (-XX:+HeapDumpOnOutOfMemoryError)
    4. 4. Using Thread Dumps
    5. 5. Analyzing GC Logs (-Xlog:gc)
    6. 6. Using JFR (Java Flight Recorder)
    7. 7. Using JMX (Java Management Extensions)
    8. 8. Profiling CPU Usage
    9. 9. Detecting Class Loading Issues
    10. 10. Understanding JIT Compilation (-XX:+PrintCompilation)
    11. 11. Using Mission Control for Analysis

  36. Optimizing Performance

    1. 1. Understanding JIT Compilation
    2. 2. Understanding Tiered Compilation
    3. 3. Using Inlining Optimization
    4. 4. Understanding Escape Analysis Optimization
    5. 5. Using StringBuilder for Concatenation
    6. 6. Minimizing Object Creation
    7. 7. Using Primitive Types vs Wrappers
    8. 8. Optimizing Collections
    9. 9. Using Lazy Initialization
    10. 10. Caching Expensive Operations
    11. 11. Understanding False Sharing
    12. 12. Using @Contended Annotation
    13. Example: Padding hot fields
    14. 13. Profiling Hotspots
    15. Hotspot Profiling Workflow

  37. Working with JMH (Microbenchmarking)

    1. 1. Setting Up JMH Project
    2. 2. Creating Benchmark Methods (@Benchmark)
    3. Example: Simple benchmark
    4. 3. Using Benchmark Modes
    5. 4. Configuring Warmup (@Warmup)
    6. 5. Configuring Measurement (@Measurement)
    7. 6. Using State Objects (@State)
    8. Example: State
    9. 7. Understanding Scope
    10. 8. Using Setup and TearDown (@Setup, @TearDown)
    11. 9. Avoiding Dead Code Elimination (Blackhole)
    12. Example: Blackhole
    13. 10. Running Benchmarks
    14. 11. Analyzing Results
    15. 12. Understanding JMH Pitfalls

  38. Working with Security Features

    1. 1. Using Java Security Manager
    2. 2. Configuring Security Policies
    3. 3. Using Security Manager Alternatives (Java 17+)
    4. 4. Working with Cryptography (JCE)
    5. 5. Using MessageDigest
    6. Example: SHA-256
    7. 6. Using Cipher
    8. Example: AES-GCM
    9. 7. Working with KeyStore
    10. 8. Using SecureRandom
    11. 9. Implementing SSL/TLS Connections
    12. 10. Using JAAS (authentication, authorization)
    13. 11. Understanding Security Providers
    14. 12. Preventing Common Vulnerabilities

  39. Working with Foreign Function and Memory API (Project Panama)

    1. 1. Understanding FFM API Basics
    2. 2. Managing Off-Heap Memory (MemorySegment)
    3. Example: Allocate and write
    4. 3. Using Arena for Memory Management
    5. 4. Defining Memory Layouts
    6. Example: Struct layout
    7. 5. Calling Native Functions (MethodHandle)
    8. Example: strlen call
    9. 6. Handling Pointers and Structs
    10. 7. Using jextract Tool
    11. 8. Understanding Safety Guarantees
    12. 9. Comparing with JNI
    13. 10. Understanding Performance Benefits

  40. Debugging and Troubleshooting

    1. 1. Using JDWP (Java Debug Wire Protocol)
    2. 2. Setting Breakpoints
    3. 3. Using Remote Debugging (-agentlib:jdwp)
    4. Example: Enable remote debug
    5. 4. Analyzing Stack Traces
    6. 5. Using Logging Frameworks
    7. 6. Enabling Assertions (-ea flag)
    8. 7. Using System.Logger API (Java 9+)
    9. Example: System.Logger
    10. 8. Debugging Multithreaded Applications
    11. 9. Using Memory Profilers
    12. 10. Detecting Performance Bottlenecks
    13. Bottleneck Diagnosis Workflow
    14. 11. Understanding Native Stack Traces
    15. 12. Using Debug Visualization Tools
    16. Summary