Collections
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Core Java
How HashMap works in java
Most common interview questions are “How HashMap works in java”, “How get and put method of HashMap work internally”. Here…
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Core Java
Java, Scala, Guava and Trove Collections – How Much Data Can They Hold?
One of the fascinating things about our data structures is that even though we’re so familiar with them, it’s still…
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Core Java
On Java Collection Waste
This article is about overhead posed by one of the most popular frameworks used – I bet there is close…
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Core Java
ArrayList vs LinkedList
I must confess the title of this post is a little bit catchy. I have recently read this blog post…
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Core Java
Would you dare to change HashMap implementation?
There are bold engineers working for the Oracle nowadays. I came to this conclusion when trying to nail down a…
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Core Java
Most efficient way to increment a Map value in Java – Only search the key once
This question may be considered too basic, but is frequently asked in the forums. In this post, I will discuss…
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Core Java
Arrays.sort versus Arrays.parallelSort
We all have used Arrays.sort to sort objects and primitive arrays. This API used merge sort OR Tim Sort underneath…
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Core Java
Java Collections API Quirks
So we tend to think we’ve seen it all, when it comes to the Java Collections API. We know our…
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Core Java
40 Java Collections Interview Questions and Answers
Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview…
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