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Java - Remove items from List while iterating

Last updated: June 05, 2021

Java - How to find key by value in HashMap

Last updated: June 05, 2021

Java - Update the value of a key in HashMap

Last updated: June 05, 2021

Java - How to put quotes in a string

Last updated: June 01, 2021

Java - How to put a comma (,) after every 3 digits

Last updated: June 01, 2021

BiConsumer example in Java 8

Last updated: June 01, 2021

Java 8 - Consumer example

Last updated: May 31, 2021

Java 8 - BinaryOperator example

Last updated: May 30, 2021

Java 8 - BiPredicate Example

Last updated: May 30, 2021

Java 8 - Predicate example

Last updated: May 29, 2021

Java 8 - Convert Stream to List

Last updated: May 28, 2021

Java 8 - BiFunction example

Last updated: May 27, 2021

Java 8 - Function example

Last updated: May 26, 2021

Java - Convert List to Map

Last updated: May 23, 2021

Exception testing in JUnit

Last updated: May 22, 2021

Hamcrest Collections Matcher

Last updated: May 22, 2021

Hamcrest equalTo () Matcher

Last updated: May 22, 2021

AAA pattern of unit test (Arrange/Act/Assert)

Last updated: May 22, 2021

Hamcrest Text Matcher

Last updated: May 21, 2021

Hamcrest Custom Matcher

Last updated: May 21, 2021

Why Junit uses Hamcrest

Last updated: May 19, 2021

Java - ForkJoinPool

Last updated: December 13, 2020

Java - How to use Futures

Last updated: December 05, 2020

Java - Simple HashTable implementation

Last updated: November 29, 2020

Java - Create a file in a specific path

Last updated: October 24, 2020

Java - Mockito의 @Mock, @Spy, @Captor, @InjectMocks

Last updated: September 27, 2020

Java - How to write test code using Mockito

Last updated: September 27, 2020

Java - Synchronized block

Last updated: September 13, 2020

Java - How to decompile a ".class" file into a Java file (jd-cli decompiler)

Last updated: July 19, 2020

Java - How to generate a random number

Last updated: June 30, 2020

Java - Calculate powers, Math.pow()

Last updated: June 30, 2020

Java - Calculate the square root, Math.sqrt()

Last updated: June 30, 2020

Java - How to compare String (==, equals, compare)

Last updated: June 30, 2020

Java - Calculate String Length

Last updated: June 30, 2020

Java - case conversion & comparison insensitive (toUpperCase, toLowerCase, equalsIgnoreCase)

Last updated: June 30, 2020

Java - Difference between System.identityHashCode() and hashCode()

Last updated: June 30, 2020

Java - How to create, run, and stop a Thread

Last updated: June 17, 2020

Java - How to use CompletableFuture

Last updated: June 16, 2020

Java - How to use CountDownLatch

Last updated: June 15, 2020

Java - How to use AtomicLong

Last updated: June 14, 2020

Java - How to use ArrayBlockingQueue

Last updated: June 09, 2020

Java - Sorting an array (ascending, descending)

Last updated: June 07, 2020

Java - Checking string patterns with String.matches() and introducing various examples

Last updated: June 07, 2020

Java - How to calculate directory (folder), file size

Last updated: May 01, 2020

Java - How to get file extension from file

Last updated: May 01, 2020

Java - How to create a text file

Last updated: April 30, 2020

Java - How to read a Text file

Last updated: April 30, 2020

Java - How to rename, move a file

Last updated: April 30, 2020

Java - How to write Text(String) to a file

Last updated: April 30, 2020

Java - How to delete all subfolders, files

Last updated: April 29, 2020

Java - Convert Milliseconds to Hours, Minutes, Seconds

Last updated: April 21, 2020

Java - How to get a list of files in a specific directory

Last updated: April 15, 2020

Java - How to merge two Lists into one

Last updated: April 14, 2020

Java - Different ways to sort a Map

Last updated: April 14, 2020

Java - How to convert Set to List and List to Set

Last updated: April 12, 2020

Java - Output current time, date in desired format

Last updated: April 10, 2020

How to convert Map to List in Java

Last updated: April 04, 2020

Java - How to extract only number(int) from String(String)

Last updated: April 04, 2020

Java - How to use AtomicReference

Last updated: January 17, 2020

Java - How to output stack trace (Throwable, Exception)

Last updated: January 17, 2020

Java - How to read and write CSV file with OpenCsv

Last updated: January 15, 2020

Java - How to use Objects.equals()

Last updated: December 14, 2019

Java - FixedThreadPool(ThreadPoolExecutor), how to use fixed threadpool

Last updated: November 09, 2019

Java - How to use ScheduledThreadPoolExecutor

Last updated: November 02, 2019

Java - How to use AtomicInteger

Last updated: November 01, 2019

Java - How to use AtomicIntegerArray

Last updated: November 01, 2019

Java - How to compare Time and Date

Last updated: November 01, 2019

Java - Easiest way to parse JSON

Last updated: November 01, 2019

Java - How to convert Char array to String