9.9 String is Immutable

Introduction to Java Strings, concept of immutability, creating string objects, Immutable string
Immutable means unmodifiable or unchangeable. In java string objects are immutable.The immutable objects used to improve readability and runtime efficiency in object-oriented programming. Immutable objects are inherently thread-safe.

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[vibinvibs]

thank you sir fr teaching us . u r one of the great teacher ever@ navin reddy

[dhavalshah]

I think when you do new String ("Navin") it will create a new object 103 - Navin in the heap memory. In the video it say it will refer to the same one

[yuvarajs]

Hai Navin Reddy, Please give us proper answer for String memory management and String is Immutable, In interview I told answer for string immutable As you taught in this video They rejected me in first round itself.

[shyamelakapalli]

String s=new String ("syam"); if you use s.intern(); then only it points to string pool until then it points to heap.

[preetird]

@0:36 When Navin says "mutability is a crime"
Me: "It's true..Corona should have been a String(immutable)"
😂🥲
April: 2021

[SurajPandey-vigr]

Amazing Telusko you are such a good teacher

[babithabalija]

I cant find the app in play store. Wonderful videos. Crisp and clear explanation

[harithkumar]

I watch complete adds on your videos, so that you can earn some money .

[harisudan]

Hi navin, whenever u teach any concept could you give a program code example it will useful to understand the concept easily

[AvidWanderlust]

"Welcome back aliens" is immutable

[aymanmomin]

Sir can you please make a video on heap and stack memory along with a separate video on a roadmap for desktop application developers

[pareshhere]

Looking you drawing on board and now all animations... That's mutable... 😁

[shahriarmim]

owwhoo ! Telusko is always been great ! But I don't know how he had mistaken at 4:57 his new String("navin"); will create a new object on heap outside of the String Pool where 'navin' exists and this 'navin' is not that 'navin' from String Pool !

[NavinKumar-igxb]

I also faced name issue. People used to send or write to wrong Naveen. Nice video

[Sumitanad]

Creating New Strings Earlier we promised to talk more about the subtle differences between the various methods of creating a String. Let's look at a couple of examples of how a String might be created, and let's further assume that no other String objects exist in the pool:
String s = "abc"; // creates one String object and one // reference variable In this simple case, "abc" will go in the pool and s will refer to it.
String s = new String("abc"); // creates two objects, // and one reference variable In this case, because we used the new keyword, Java will create a new String object in normal (nonpool) memory, and s will refer to it. In addition, the literal "abc" will be placed in the pool.

[simulink]

Hmm good 🙂.. But in different videos, blogs different informations 😶 which confusing me 😐. This video make sense for me a bit more. Goog.

[ankitanand]

Due to string immutability you can safely return them from functions.
If strings were mutable anyone could have changed your return value.
Thats why serialization is done also.

[muhammadomersaleem]

Hi, what if we do not create str1 object and change str to "Reddy". Will it also create new string in string pool or will it change/replace Navin with Reddy? If first case is true then what will happen with Navin in string pool?

[swathikumar]

Sorry for saying.this is wrong when ever we create string using new keyword it will never pointing to string pool it will create new string in heap .if u want to put that value into sting pool there is a method called intern()

[rajatkiit]

String constant pool is created in Method Area not heap area. We access it by using intern () method which create object in heap area of that string.