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Top Interview Question: StringBuilder vs StringBuffer vs String — Java Performance Optimization Guide

Sanjay Singh
7 min readOct 5, 2024

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Introduction

Understand the key differences between these fundamental classes to ace your Java interview.

Top Interview Question: StringBuilder vs StringBuffer vs String — Java Performance Optimization Guide
Top Interview Question: StringBuilder vs StringBuffer vs String — Java Performance Optimization Guide

When to Use Each

  • String: Few modifications, thread safety required.
  • StringBuilder: High-performance string manipulation, single-threaded.
  • StringBuffer: Multithreaded environments, shared string resources.

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1. Overview of String, StringBuffer, and StringBuilder

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Sanjay Singh
Sanjay Singh

Written by Sanjay Singh

Java, Spring Boot & Microservices developer Sharing knowledge, tutorials & coding tips on my Medium page. Follow me for insights & see story list section

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