Core java Archive
In this post ,we will try to understand hashcode() and equals() method in java. Java HashMap: HashMap in java How HashMap works in java hash and indexfor method in HashMap hashcode and equals method in …
If you are getting below error while running the Maven build. No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? There are 3 ways to solve …
In this post, we will see about System.out.println in java and how it works. Did you use system.out.println before? I think this is first statement every java developer compiles. It is generally called by the …
In this post, we will see the difference between float and double data types in java. As you might know, float and double both can be used to represent floating point number in java. We …
In this post, we will see where is java installed on mac. If you have the following questions, then this post will help you. What version of Java do I have How to check Java …
In this post, we will see how to program FizzBuzz in java. Fizzbuzz is a fun game played generally by school children.It is simple game in which when your turn comes, you need to say …
In this post, we will implement isPrime method. isPrime method will take an integer as input and determine whether the number is prime or number. A prime number is a number which has only two divisors …
We have already seen random number generator in java.In this post, we will address specific query on how to generate random number between 1 to 10. We can simply use Random class’s nextInt() method to achieve …
In this post, we will discuss Could not find or load main class. Did you get this error before? If you have good amount of experience in Java programming or as a novice java developer, …
In this post, we will see how to print the following pyramid pattern. Problem Input : n = 4 Output : 1 3*2 4*5*6 10*9*8*7Input : n = 5 Output : 1 3*2 4*5*6 10*9*8*7 …
In this post, we will see about Segment Tree in java. Problem Consider an Array of Integers, int arr = {a1, a2, a3, a4, a5,….., an}; Given two types of queries, (i) In the first …