Core Java Interview question - For String manipulation String, StringBuffer or StringBuilder?

Publié le: 22 septembre 2020
sur la chaîne: ITGARDEN

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Click the below link to download the latest Billing System Source code.
https://pinepad.in/downloads/
More information about the Billing System Project. Watch this video
   • Billing System using Spring Boot - Billing...

Everybody knows that String is an immutable class. if someone may not know about immutable. For those folks, I am explaining here about immutable. The general meaning of immutable is unchangeable. You can’t change that. So, the String object is unchangeable.
For Example.
String s1 = new String(“Suresh “); // here we are creating new String instance.
s1 = s1 + “Stalin ,”; // here we are creating new String instance.
s1 = s1 + “Steve Jobs “; // Again here we are creating new String Object for adding new value to s1
System.out.println(s1);
After creating a new instance of String Object, I am trying to modify the same string object. Yes, it is working perfectly and I am getting the expected output
But, the problem here is how appending is happening. When using the + operator each time, it is creating a new String object. In real-time we may get a scenario to append 1000 of String object or lacs of String object to append. This creates huge performance issues so that, all Java experts saying that we should not use String objects while appending data.
Java provides two utility classes to handle the String data. One is StringBuffer and another one is StringBuilder.
Detailed Text description please read following article for String vs StringBuffer vs StringBuilder
https://pinepad.in/java/core-java/str...

Committed code in the following git repository
https://github.com/sureshstalin/itgar...

I am developing a Billing System using Spring Boot. Already there are many many topics I have posted related to Billing System Project. Please subscribe to this channel to get all new updates about the Billing System and the first version of the Billing System Java code is absolutely free. It is available to download from here https://pinepad.in/downloads/ In the First version of the Billing System, I have implemented all kinds of Technical topics. Technical topics nothing but, integrating Spring boot logging framework, Spring Boot validation framework, and many more. Please follow the Billing System which I developing, it is very useful who wanted to get real-time project experience in Spring Boot. you can easily crack the interviews. Even I am ready to explain the technical topics if you have any doubts about the Project. You can find my contact. You can find my contact @ www.pinepad.in. Also, I have given my LinkedIn, Instagram, and FB profile in my Channel homepage banner (   / @itgarden9753  )

I have posted all technical related topics on the following site. Please check it out
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If you want to only Billing-System-related Technical Topics, please go to the following link.
https://pinepad.in/category/java/bill...

Please follow me on   / suresh-stalin  . The reason I am asking is, if I post any Technical article or billing System-related Article you will be getting a notification.

Click the below link to download the latest Billing System code.
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#stringvsstringbuildervsstringbuffer #stringvsstringbuilder #stringvsstringbuffer #stringbuildervsstringbuffer #stringcodingpractice

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