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What is String pool?

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Anjali Sharma answered on January 4, 2023 Popularity 9/10 Helpfulness 1/10

answer What is String pool?

What is String pool?

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String pool is nothing but a storage area in Java heap where string literals stores.

It is also known as String Intern Pool or String Constant Pool.

public class StringInternExample  
{  
public static void main(String args[])   
{  
//it will store in the string pool      
String str1 = "Python";  
String str2 = "Data Science";  
//it returns the reference of the pooled instance i.e. str1  
//it will not take place in the string pool  
String str3 = "Python";  
String str4 = "C";  
//store in Java heap  
String str5 = new String ("Java");  
//store in Java heap  
String str6 = new String ("C++");  
//store in Java heap  
String str7 = new String ("Data Science");  
//it will not take place in Java heap  
//it will store in string pool  
String str8 = new String ("C").intern();  
//returns false  
System.out.println((str1 == str5)+", Strings are not equal.");  
//returns false because str2 occupies space in string pool and str7 occupies space in Java heap  
System.out.println((str2 == str7)+", Strings are not equal.");   
//it returns true because we have invoked the intern() method and the String C is already present in the string pool  
System.out.println((str4 == str8)+", Strings are equal.");   
}  
}

Refer to JVM Memory Internal Diagram

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript

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Contributed on Jan 04 2023

Anjali Sharma

0 Answers Avg Quality 2/10

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