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Core Java

Overview Collection Framework Hierarchy Collection Interface Collection Classes List List - List in Java ArrayList LinkedList Vector ArrayList Vs Linkedlist Vs Vector in Java Difference Between an Array and Vector in Java Array vs ArrayList ArrayList vs CopyOnWriteArrayList in Java Stack Ways to Iterate through Stack in Java Convert Array to ArrayList in Java How to convert Array to ArrayList in Java Convert Java ArrayList to Array How to Remove Elements From an ArrayList in Java How to Remove Duplicate Elements From an ArrayList in Java Convert int array to List of Integer in Java Convert ArrayList to LinkedList in Java Clone a List in Java Filter List in Java Immutable List in Java Initialize List in Java in a Single Line Initialize a list in Java in single line with specified value List size Puzzle Ways to Join two Lists in Java Remove Slice from a List in Java Remove nulls from a List in Java Reverse an ArrayList in Java Set List vs Set HashSet LinkedHashSet TreeSet SortedSet NavigableSet Set Examples HashSet Vs TreeSet Vs LinkedHashSet in Java How HashSet Works Internally In Java Convert an Array to a Set in Java Convert Set of Integer to array of int in Java Convert Set of String to Array of String in Java Map Map How HashMap Works Internally In Java Map.Entry SortedMap NavigableMap TreeMap Hashtable EnumMap Dictionary HashMap What Are Initial Capacity And Load Factor Of HashMap In Java HashMap Vs HashSet In Java HashMap Vs TreeMap Vs Hashtable Vs LinkedHashMap in Java LinkedHashMap LRU Cache with LinkedHashMap in Java IdentityHashMap WeakHashMap Properties 5 ways to Clone a Map in Java Convert Java HashMap To ArrayList In Java 5 ways to Iterate Map in Java using entrySet()Sort Map By Value Sort Map by Keys in Java Top 9 questions about Java Maps equals method for Checking for Equality in Collections hashCode Method Need for Java Collections Collection Views and Wrappers Count the number of calls of put() and get() for a map in Java Array of ArrayList, ArrayList of Array Set vs. Set<?>java.util.ConcurrentModificationException Collections and Autoboxing Most Commonly Thrown Exceptions in the Collections Framework Queue Queue: remove vs poll and insert vs offer Array to Queue Queue to Array Bounded vs Unbounded (Blocking vs Non-blocking) Queues PriorityQueue Deque ArrayDeque Stack Data Structure: Stack Class vs Deque Interface Collections Class Collections: Legacy Classes and Interfaces Google Guava Difference Between Collection And Collections In Java Collections Empty List Factory Method 9 Factory Methods for Immutable List, Set and Map Sorting Collections Comparable Interface Comparator Interface Comparing Numbers in Java 8 Comparator comparing Methods Parallel Sort on Arrays and Collections Comparable vs Comparator Collection Iterators and Enumerators Enumeration Interface Iterator Iterator Interface Obtaining Java Iterator Iterating on Java Iterator Iteration Order in Java Iterator Why Iterator Does Not Have an add() Method Iterator: Modification During Iteration Remove Elements from Java Collection During Iteration Iterator forEachRemaining method Create Custom Java Iterator Set Iterator Enumeration vs Iterator in Java ListIterator Iterator vs ListIterator In Java Difference Between Iterator And ListIterator In Java Fail-Fast vs Fail-Safe Iterators in Java Spliterator Spliterator Intro Spliterator Methods Spliterator Data Characteristics Iterable Interface Generics: Implementing the Iterable Interface Different Ways Of Iterating An ArrayList In Java Advantages Of Using ArrayList Over Arrays Convert HashMap to TreeMap in Java Convert List of Characters to String in Java Convert List of Integer to array of int in Java Convert List of String to Array of String in Java Convert List of String to List of Integer in Java Convert List to Array in Java Convert List to Map in Java Convert List to Set in Java Convert Map to a List in Java 8 Convert Map to an Array in Java Convert Set of Integer to Set of String in Java 8 Convert Set of String to Set of Integer in Java 8 Convert Set to List in Java Convert Set to Map in Java Convert a String to a List of Characters in Java Convert an Array to Iterable in Java Convert an Iterable to a Collection in Java Merge Two Sets in Java How To Remove Duplicate Elements From ArrayList In Java ConcurrentLinkedDeque in Java ConcurrentLinkedQueue in Java ConcurrentSkipListSet in Java Generics and Java Collections Why Java Collections were made Generic Generic Collection Example Generic Iterator Example Iteration on Generic Java Collection Example BitSet Class

Synchronous vs Asynchronous Execution

Callable Tasks Reference

Tasks and Executors Overview

Publishing, Escape and Thread Confinement

Exceptions and Threads

CompletableFuture

Executors and Fixed Thread Pools

The Main Thread

ThreadLocal as a Container

Thread Safety Issue: Visibility

Atomicity and Locking

Thread Safety Issue: Race Conditions

Types of Threads in Java

Thread Safe vs Thread Compatible

Interrupts and Join

Print Numbers Sequentially Using Even and Odd Threads

Deadlock, Livelock and Starvation Basics

Using wait and notifyAll to Coordinate Threads

Thread State Methods

Concurrency and Synchronization

7 Things Every Java Programmer Should Know About Threads In Java

Thread Priorities

Always terminate the thread which it is interrupted

Assembly Line Concurrency Model

Asynchronous Tasks

Binary Semaphore vs Reentrant Lock

Callable and Future in Java concurrency

Callable Future

Calling run() instead of start()

Can two threads call a synchronized method and normal method at the same time

Can we Start The Same Thread Twice in Java

Concurrency Evolution and Topics

Concurrency Models and Distributed System Similarities

Concurrency Models

What Is Thread Safety?

Concurrency vs Parallelism

CPU Cache Coherence in Java Concurrency

Create Java Thread by Extending Thread class

Create Java Thread by implementing Runnable

Data Race Problem

Deadlock between Threads

Deadlock Prevention in Java

ExecutorCompletionService

ExecutorService

False Sharing in Java

Functional Parallelism Concurrency Model

Future Explained

FutureTask Example Program

Get current Java Thread with Thread.currentThread method

Good practices to use synchronized blocks

Happens-Before Guarantee

How to Synchronize ArrayList, HashSet and HashMap

How to write deadlock and resolve in java

Inter-Thread Communication

Issues with Synchronization

Composing Thread-Safe Objects

Lock Reentrance

Lock vs monitor in java

Monitors – The Basic Idea of Java Synchronization

notify() and wait() examples

notify vs notifyAll In Java

Objects as Locks

Parallel Workers Concurrency Model

Pause Java Thread

Race Conditions and Critical Section

Read Write Locks in Java

Reentrance Lockout

ReentrantLock and Conditions

Runnable vs Callable in Java

ScheduledExecutorService

Setting And Getting Java Thread Name And Thread ID

Shared State VS Separate State in Concurrency Models

Statement Reordering and Visibility

Stop Java Thread

Synchronized Blocks

synchronized Keyword

Synchronous Tasks

Task Scheduling with Executors - ScheduledThreadPoolExecutor Example

run() vs start() Quiz

Thread Class Intro

Thread Creation

Thread - Interrupts and Join

Thread Life Cycle and States in Java

Thread Name - Get and Set

Thread Properties or Attributes Intro

How to Build a Thread-Safe Class

Thread Safety and Immutability

Thread Safety and Shared Resources

Thread Safety in Java

Thread Safety Issues

Thread Safety Strategies

Thread Scheduling - Priority Of A Thread In Java

Thread Signaling

Difference Between sleep() and wait()

Thread Subclass OR Runnable Implementation for Thread Creation

Thread Termination in java

Thread wait, notify and notifyAll Example

ThreadLocal Example - When and How to Use

ThreadPoolExecutor and BlockingQueue Example

ThreadPoolExecutor + Callable + Future Example

ThreadPoolExecutor

ThreadPoolExecutor - Java Thread Pool Example

User Threads vs Daemon Threads in Java

Virtual Threads

volatile keyword

Which Concurrency Model is Best

Why wait(), notify() And notifyAll() Methods Are in Object Class And Not in Thread Class

Why wait(), notify() And notifyAll() Must be Called Inside a Synchronized Method or Block

Computer Science

Java Collections

Collections Empty List Factory Method

Collections Empty List Factory Method

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