UrbanPro

Location Set your Location

Login Ask & Answer Success Stories Courses Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore Hyderabad Delhi Mumbai Chennai Pune Kolkata Gurgaon Ahmedabad Jaipur Noida
✕

Popular Categories

Class 12 Tuition Class 11 Tuition Class 10 Tuition Class 9 Tuition Spoken English Class 6 to 8 Tuition IELTS Coaching Class 1 to 5 Tuition Java Training Python Training German Language
✕

Find the best tutors and institutes for Java Training

Find Best Java Training Classes

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?
Java > Java Questions > What is the difference between string, stringbuffer,...
✕

Search for topics

What is the difference between string, stringbuffer, stringbuilder?

Asked by Last Modified  

IT Courses/Java

Follow 1
Answer

22 Answers

Please enter your answer

Java Trainer

String is immutable, means once you created a String you can not modify, Even if you try to it will create a new string for you and assign that to you. StringBuffer and StringBuilder are immutable, however methods of String buffer are thread safe, So when you are having multithreading in you application... read more
String is immutable, means once you created a String you can not modify, Even if you try to it will create a new string for you and assign that to you. StringBuffer and StringBuilder are immutable, however methods of String buffer are thread safe, So when you are having multithreading in you application you should use StringBuffer otherwise StringBuilder. read less
Comments
Dislike Bookmark

Senior Software Engineer

String is immutable, if you try to alter their values, another object gets created, whereas StringBuffer and StringBuilder are mutable so they can change their values. Thread-Safety Difference: The difference between StringBuffer and StringBuilder is that StringBuffer is thread-safe. So when the... read more
String is immutable, if you try to alter their values, another object gets created, whereas StringBuffer and StringBuilder are mutable so they can change their values. Thread-Safety Difference: The difference between StringBuffer and StringBuilder is that StringBuffer is thread-safe. So when the application needs to be run only in a single thread then it is better to use StringBuilder. StringBuilder is more efficient than StringBuffer. Situations: If your string is not going to change use a String class because a String object is immutable. If your string can change (example: lots of logic and operations in the construction of the string) and will only be accessed from a single thread, using a StringBuilder is good enough. If your string can change, and will be accessed from multiple threads, use a StringBuffer because StringBuffer is synchronous so you have thread-safety. read less
Comments
Dislike Bookmark

Trainer

String is immutable, i.e. once a String object is created and its value is assigned, its value can not be changed. This is because the String object is stored in Constant String Pool. If you assign a new value to a String reference variable, a new String object is created and stored in Constant String... read more
String is immutable, i.e. once a String object is created and its value is assigned, its value can not be changed. This is because the String object is stored in Constant String Pool. If you assign a new value to a String reference variable, a new String object is created and stored in Constant String Pool. Alternatively we can use String Buffer and String Builder which are mutable. It means their values can be changed after they have been created as they are stored in heap. The difference between StringBuffer and String Builder are given below: 1) StringBuffer is synchronised whereas StringBuilder is not synchronised 2) StringBuffer is thread safe whereas StringBuilder is not thread safe. 3) StringBuffer is slow in performance whereas StringBuilder is faster. read less
Comments
Dislike Bookmark

12 years of MNC company work experience on java ,J2ee technologies

String is immutable and StringBuffer and StringBuilder are mutable. StringBuffer is synchronized i.e. thread safe. It means two threads can't call the methods of StringBuffer simultaneously. StringBuilder is non-synchronized i.e. not thread safe. It means two threads can call the methods of StringBuilder... read more
String is immutable and StringBuffer and StringBuilder are mutable. StringBuffer is synchronized i.e. thread safe. It means two threads can't call the methods of StringBuffer simultaneously. StringBuilder is non-synchronized i.e. not thread safe. It means two threads can call the methods of StringBuilder simultaneously. read less
Comments
Dislike Bookmark

5+ years of Experience into Java Development and Training

String ---Immutable --not thread safe StringBuffers---Mutable ---thread safe StringBuilder---Mutable---Not thread safe. Each time you change a string objects value, new object will get created in the memory and reference starts referring the new object. But for StringBuffer and Buider the existing... read more
String ---Immutable --not thread safe StringBuffers---Mutable ---thread safe StringBuilder---Mutable---Not thread safe. Each time you change a string objects value, new object will get created in the memory and reference starts referring the new object. But for StringBuffer and Buider the existing object will get changed. No new memory gets allocated. read less
Comments
Dislike Bookmark

Java Trainer with 6+ years of experience in big MNCs

String eats up the heap memory especially when there are modifications made and hence suggested not to be used in such scenarios.
Comments
Dislike Bookmark

Java Web Application Development and Aptitude Trainer

String object are immutable, whereas StringBuffer and String Builder are mutable. Between StringBuffer and StringBuilder, the former is synchronized, hence providing thread safety, while the later is not synchronized, therefore should not be used in case of multithreading.
Comments
Dislike Bookmark

Java Tutor

String is an immutable class , whereas StringBuffer is a synchronized mutable class so it is thread safe and StringBuilder is non-synchronized mutable class.
Comments
Dislike Bookmark

Software Testing Trainer(Automation)

String does not has append,insert,capacity and replace methods but in StringBuffer and StringBuilder has,String is thread safe since its immutable,StringBuffer is also thread safe since all methods are synchronized but StringBuilder is not thread safe
Comments
Dislike Bookmark

Trainer

String is immutable, if you try to alter their values, another object gets created, whereas StringBuffer and StringBuilder are mutable so they can change their values. Thread-Safety Difference: The difference between StringBuffer and StringBuilder is that StringBuffer is thread-safe.
Comments
Dislike Bookmark

View 20 more Answers

Related Questions

Anuradha asked

What is meant by Java full stack and angular Java?
30 May
12
Afsal asked

What do you understand by Object and Class?
30 Apr
18
Varun asked

i am working in mainframe technology, we are doing modernization, need to convert 1 cobol program to java program, is any one there to help me out, need same mainframe program with same login need to convert to java results should be same as mainframe, can some one help me out on this please
20/11/2019
9

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Lambda Expressions in Java
A lambda expression, introduced in Java 8 is similar to a block of code resembling an anonymous function that can be passed to constructors or methods for execution as an argument. Examples: a)() ->...

Ashish Somvanshi | 16 Apr

0 0
0
Java Collection
Collection: The collection provides an architecture like a list where we can store and manipulate the group of items. Through Collections, we can achieve operations such as searching, sorting, insertion,...

Vinaykumar Devarkond | 25 Mar

0 0
0
JAVA - Object Cloning
JAVA - Object Cloning Is the way of creating the same copy of object without calling the class constructor. It means we can make any class object multiple times without calling its default constructor....

Gaurav Kothari | 16 Feb

1 0
0

Recommended Articles

Java: An Object-Oriented Language

Java is the most commonly used popular programming language for the creation of web applications and platform today. Integrated Cloud Applications and Platform Services Oracle says, Java developers worldwide has over 9 million and runs approximately 3 billion mobile phones . Right from its first implication as java 1.0...

Read full article >

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to write once, run anywhere (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Find Oracle Java Certification near you
Oracle Java Certification in Bangalore
Oracle Java Certification in Hyderabad
Oracle Java Certification in Pune
Oracle Java Certification in Delhi
Oracle Java Certification in Chennai
Oracle Java Certification in Mumbai
Oracle Java Certification in Kolkata
Oracle Java Certification in Noida
Oracle Java Certification in Ahmedabad
Oracle Java Certification in Gurgaon

Looking for Java Training Classes?

Find best Java Training Classes in your locality on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Java Training Classes?

Find best tutors for Java Training Classes by posting a requirement.

  • Post a learning requirement
  • Get customized responses
  • Compare and select the best
Post your learning requirement

Looking for Java Training Classes?

Find best Java Training Classes in your locality on UrbanPro

Post your learning requirement
    UrbanPro

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2021All Rights Reserved