Java String Pool: How It Works | Java String (String pool) | Java Tutorial

Welcome to our Java tutorial series! In this video, we'll be delving into an essential aspect of Java strings: the String Pool. The String Pool is a special memory area in the Java Virtual Machine (JVM) where string literals are stored, providing benefits in terms of memory optimization and performance enhancement.

In this tutorial, we'll cover the following key points:

1. **Understanding the String Pool:** We'll provide a comprehensive explanation of what the String Pool is and why it's crucial in Java programming. You'll learn about the role of the String Pool in optimizing memory usage by storing unique string literals and promoting string reuse.

2. **Exploring String Interning:** We'll delve into the concept of string interning, which involves adding string literals to the String Pool only once and reusing them whenever they're encountered again in the code. You'll learn how string interning helps reduce memory consumption and improve performance by avoiding duplicate string objects.

3. **String Pool Management:** We'll discuss how the JVM manages the String Pool, including how string literals are added to the pool, how duplicates are avoided through interning, and how string objects are retrieved from the pool during program execution.

4. **Best Practices and Considerations:** We'll discuss best practices for working with the String Pool in Java applications. You'll learn about considerations such as string immutability, string concatenation, and how to leverage the String Pool to optimize memory usage and improve performance.

Whether you're a beginner learning Java programming or an experienced developer looking to deepen your understanding of Java string internals, this tutorial is designed to provide you with a solid understanding of the String Pool and its significance in Java development.

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Thank you for watching, and happy coding!

Java String (String pool) | Java Tutorial

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[byg]

Teacher, your explanations are very clear and easy to understand. Thanks !!

[nazimahmed]

Wow Ram this video has brought me out of big confusion... nice work Ram

[sowjanyachinnu]

Very nice explanation sir.. Thank you so muchh

[yuuichiyamasaki]

String pool is located in runtime constant pool.

[ravishankar]

Hi Ram Sir, I am new to java . I just executed a small program as below

String s1;
s1 = new String();

String s2 = new String()
s1 = "YOW!";

s2 = s1;

String s3 = new String(s1);

String s4;
s4 = "YOW!";


System.out.println("s1==s2"+ s1==s2);
System.out.println("s1==s4"+ s1==s4);
System.out.println("s1==s3"+ s1==s3);
System.out.println("s2==s3"+ s2==s3);

why s1 == s4 is returning 'false' and why s2==s1 is returning 'false'?

[razapatel]

Sir in your video in the last line by mistake again u write s1 == s3 change it s3 to s4.
Ur video is very appreciating me.
Thank you