Saturday, September 30, 2023
10 Exception handling Best Practices in Java Programming
How to Fix Exception in thread "main" java.lang.ExceptionInInitializerError in Java Program? Example
How to fix java.io.FileNotFoundException: (Access is denied)? Example
java.io.FileNotFoundException: maven-eclipse-web-demo (Access is denied)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:127)
at java.util.zip.ZipFile.<init>(ZipFile.java:88)
at sun.tools.jar.Main.list(Main.java:979)
at sun.tools.jar.Main.run(Main.java:224)
at sun.tools.jar.Main.main(Main.java:1149)
How to resolve java.lang.UnsupportedClassVersionError:Unsupported major.minor version 49.0 to 65 with example
The java.lang.UnsupportedClassVersionError is a quite common error after NoClassDefFoundError or ClassNotFoundException they all seems to related to class files but they all are different and there cause and resolution are different. In this java tutorial, we will see what is UnsupportedClassVersionError in Java? Why UnsupportedClassVersionError comes in Java? What are a class file format and version numbers associated with it and finally how to resolve UnsupportedClassVersionError in Java?
Thursday, September 28, 2023
Fixing java.net.BindException: Cannot assign requested address: JVM_Bind in Tomcat, Jetty
How to Fix java.net.ConnectException: Connection refused: connect in Java
How to solve java.util.NoSuchElementException in Java? Example
How to fix java.util.NoSuchElementException in Java
How to fix java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
Top 10 DevOps Certifications for Experienced IT Professionals in 2024
Wednesday, September 27, 2023
[Solved] How to find and Print Armstrong number between 0 and 9999 in Java? Example
Java Program to Multiply Two Matrices - Matrix Multiplication Example
[Solved] How to Implement Binary Search in Java without Recursion? Iterative Algorithm Example Tutorial
How to Implement Stack data structure in Java? Example Tutorial
How to check if a given Number is Binary in Java? [Solved] Example
How to find Middle Element of Linked List in Java in Single Pass
How to find the 3rd (Kth) Node from end of linked list in Java? Fast and Slow Pointer Example [Solved]
How to Remove a character from String in Java ? Recursion Example [Solved]
How to Print Pyramid Pattern of Alphabet Characters in Java? Example Tutorial [Solved]
Tuesday, September 26, 2023
What is LongAdder, AtomicLong, and LongAccumulator in Java? How it works? Example Tutorial
How to calculate large factorial using BigInteger in Java? Example Tutorial
[Solved] How to find Largest Prime Factor of a Number in Java? Example
3 ways to swap two Numbers without using Temp or Third Variable in Java?
Java 8 Compute(), ComputeIfAbsent() and ComputeIfPresent() Example Tutorial
Monday, September 25, 2023
How to Find Largest and Smallest of N numbers without using Array in Java? Example
How to Remove Duplicate Characters from String in Java? Example
How to generate Prime numbers in Java? Sieve of Eratosthenes Algorithm Example
Fibonacci Series in Java using Recursion and Iteration - Example Tutorial
Quicksort Sorting Algorithm in Java - In Place Example and Explanation
How to Find Multiple Missing Integers in Given Array of Numbers with Duplicates in Java?
Top 30 Linked List Algorithm Questions from Programming/Coding Interviews
How to Print Fibonacci Series in Java without Recursion - Coding Problem for Beginners
Sunday, September 24, 2023
3 ways to sort an ArrayList in Java without using sort() method - Example Tutorial
How to fix class file has wrong version 61.0, should be 53.0 error in Spring Boot? [Solved]
2 Ways to check If String is Palindrome in Java? Recursion and Loop Example Tutorial
How to Convert Fahrenheit to Celsius in Java with Example
How to print 1 to 100 without using loop in Java? Example Solution
How to Convert Binary Number to Decimal in Java - Algorithm Example Tutorial
Solution: Let's first revise some theory of the number system, which is required to convert a number from binary to decimal format. There are four kinds of number systems binary, octal, decimal, and hexadecimal. Binary is base 2 and that's why any number is represented using only two-digit, 0, and 1 also known as bits.
Double Checked Locking on Singleton Class in Java - Example
How to check if a number is a palindrome or not in Java - Example
How to Count Occurrences of a Character in String - Java Programming Example
How to Find Missing Number on Integer Array of 1 to 100 - BitSet Example
How to calculate area of Triangle in Java - Example Solution
How to get User input from Console and command line in Java - Example Tutorial Code
Saturday, September 23, 2023
How to debug Servlet, JSP based Java Web Application in Eclipse with Tomcat
How to Find All Permutations of String in Java using Recursion? Solution Example
How to find duplicate words in Java String? [Solution Example]
Bubble Sort Algorithm in Java with Example
How to Find Largest of Three Integers in Java - Algorithm, Logic Example
3 ways to parse String to float in Java? Examples
Friday, September 22, 2023
Why Dependency Injection is a Best Practice?
Thursday, September 21, 2023
15+ Spring Framework Quizzes for Java Programmers (Free)
How to print pyramid pattern of stars and numbers in Java? Example
How to Find Prime Factors of Integer Numbers in Java - Factorization Algorithm Example
How to Count number of Set bits or 1's of Integer in Java? Example
How to Add Two Integer Numbers without using Plus + or ++ Arithmetic Operator in Java - Recursion example
How to Check if Integer Number is Power of Two in Java - 3 examples
How to choose a Collection class in Java? Flowchart Example
Wednesday, September 20, 2023
How to Check If Number is Even or Odd without using Modulus or Remainder Operator? Example
Java Program to print Prime numbers in Java - Example Tutorial and Code
Java Program to Find Sum of Digits in a Number using Recursion? Example
Difference between @RunWith vs @ExtendWith Annotations in JUnit - Java Unit Testing Example
Hello guys, if you have written any unit test in Java then you must have come across JUnit and Mockito. JUnit is the most popular and widely-used testing framework in the Java ecosystem, enabling developers to write and execute unit tests for their Java applications. While writing tests, JUnit provides various annotations to facilitate different functionalities. Two of these annotations, @RunWith and @ExtendWith, play a crucial role in customizing the test execution process. In this article, we will explore the key differences between these two annotations and illustrate their usage through a Java program. This one is also one of the popular JUnit Interview question which I have also included in my earlier article about 20 Most asked JUnit Interview Questions for Java developers, if you haven't read it yet then you can also read it to learn more about JUnit and unit testing in Java.
Java Program to Reverse an Integer Number - Example tutorial
How to Count Number of Words in String ? Java Coding Exercise Example
How to Reverse String in Java Using Iteration and Recursion - Example
Top 20 String Algorithm Questions from Coding Interviews
Tuesday, September 19, 2023
How to check if two String are Anagram in Java - Program Example
How to delete a directory with files in Java - Example
How to resolve java.lang.ClassNotFoundException in Java? Example
ClassNotFoundException is one of Java nightmare every Java developer face in there day to day life. java.lang.NoClassDefFoundError and java.lang.ClassNotFoundException are two errors which occurs by and now and chew up of your precious time while finding and fixing root cause. From the name java.lang.ClassNotFoundException looks quite simple but underlying cause of it is always different and which classifies it as an environmental issue. In this java tutorial, we will see what is ClassNotFoundException in java, what is real cause of it, and how to fix it along with some more frequent and infamous examples of java.lang.ClassNotFoundException in Java or J2EE, Don’t mistake this exception with NoClassDefFoundError in Java which is also due to incorrect classpath in Java.
9 Maven Concepts and Tools Every Java Developers Should Know
Where and How to download Spring Framework JAR file (Spring 5.0 or Spring 4.0) without Maven, Gradle
Tibco Tutorial : Http Interface for Tibco RV Issues Troubleshooting and TIBCO RV Alternatives
Monday, September 18, 2023
FIX protocol Tutorial: Futures and Options
Sunday, September 17, 2023
What is Atomic Operation and Variable in Java? AtomicInteger Counter Example
Top 12 Locking, Synchronization and Multithreading Interview Questions for 5 to 7 Years Experienced Java Programmers
What is happens-before in Java Concurrency? An example
Top 15 Java Multithreading, Concurrency Interview Questions Answers asked in Investment banks
How to avoid deadlock in Java? Example Tutorial and Tips
Top 50 Java Thread and Concurrency Interview Questions Answers for 2 to 5 Years Experienced
Inter Thread Communication in Java using wait() and notify() - Example Tutorial
How to use Lock in Java? ReentrantLock Example Tutorial
Difference between Executor, ExecutorService and Executers class in Java
Difference between @Transactional and @EnableTransactionManagement in Spring Boot
Any enterprise program that deals with data storage and retrieval must incorporate transaction management. Annotations like @Transactional and @EnableTransactionManagement in Spring make it simpler to manage transactions. Although both of these annotations support transaction management, there are some important distinctions between them that programmers must be aware of in order to use them properly. The distinctions between @Transactional and @EnableTransactionManagement in Spring will be covered in this post, along with examples to guide your decision-making.