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Gopi Gorantala

I'm Gopi — 15+ years in Java, building Kafka and Flink platforms for banks, where one lost event is a financial discrepancy. I write javahandbook.com because the guides I needed didn't exist. Everything here is tested against a real cluster first.

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Array Insertions And Shifting Algorithm

In this lesson, you will learn about an array of insertion and shifting algorithms with illustrations and code examples.

How to Prevent cannot read property split of undefined

The "cannot read property split of undefined" error occurs when we try to call the split() method on a variable that stores an undefined value.

How to Prevent cannot read property split of undefined

How to master react, continuous deployment using Netlify

React is one of the most popular libraries in the frontend world. Being a backend developer for over 10 years, I agree. I started with React 4 years ago and found it incredible 😅. And there is no reason for me to switch. Developers, you can buy some paid courses online

React app with continuous deployment using Netlify
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What Are Programming Paradigms?

In this lesson, you will learn various programming paradigms in computer science.

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Leetcode 896: Monotonic Array

An array is called monotonic if the index of each element increases from the first to the last or decreases from the first to the last.

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Find The Missing Number From The Array

In this article, we'll learn various ways to find the missing number in an array. We use a memoization approach, a mathematical approach, and the most optimized way using the XOR operator.

Find Missing Number