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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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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

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String Searching and Indexing in Java

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Strings Iteration Using Loops