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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.

What Are Types in Java?

In this lesson, you will learn and explore the fundamental concept of types in Java. Understanding types is crucial as they form the backbone of managing and manipulating data in Java programs. 1. What Are Types in Java? 2. The Importance of Types 3. Primitive Types vs. Reference Types By

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How Strings Are Used In Collections?

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StringBuilder vs. StringBuffer, Thread Safety

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Performance Comparison Of StringBuilder vs. String Concatenation

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String, StringBuilder, and StringBuffer in Java

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Understanding String Immutability

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Number Formatting in Java

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Parsing Strings To Primitive Types in Java

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String Formatting in Java (%s, %d, %f)

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Java Strings Trimming, Replacing, and Splitting