In🚀 Mastering String.intern() in Java: Use Cases & Best Practices

🔍 Introduction

Java’s String.intern() method is a powerful yet often overlooked feature that helps optimize memory usage by storing unique string instances in the string pool. In this guide, we will explore its use cases, benefits, drawbacks, and real-world applications with code examples.

🚀 Mastering String.intern() in Java: Use Cases & Best Practices

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🎯 What is String.intern()?

The intern() method ensures that a given string exists only once in the string pool, avoiding duplicate objects in memory.

String s1 = "hello";
String s2 = new String("hello").intern();
System.out.println(s1 == s2); // true

🔥 How It Works

• If the string already exists in the string pool, intern() returns the existing reference.