Java Tutorials: Why String is Immutable in Java

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Immutability: Should not change Object values once created
What benefits we get due to immutability:
Saving Heap Space
Good for HashMap Key
Good for critical operation
Good for Multiple thread operation. Thread safe

DO watch video for more info.

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You are doing great service to Java society

ishathakur

Super explanation bro ....i got clarity

yashok

Nice article, Concept cleared why String is immutable.

dyudy

Can you jst explain me about appending in a string does it creates a different object for the new string and refers to that or there is something else... as strings are immutable eg:
string s1=""Code";
s1=s1+"Learn";
SOP(s1);

output will be: CodeLearn

pragatisrivastava

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