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Interview Questions and Answers for 'Harbinger' - 2 question(s) found - Order By Newest

  Q1. What is a String Pool ?Core Java
Anonymous
Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference.

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   Like      Discuss      Correct / Improve     java   oops   string   string class   string pool   heap memory     SAS Institute  Ariba  GuideWire  Harbinger  Oracle  Virtusa  Knoa  Polaris  GuideWire  HCL Technologies  Tata Consultancy (TCS)  Infosys  Technologent  MphasiS  Harbinger Group  Kony  Evergent  NTT Data  VMware  Markit  Ariba  Tech Mahindra  Bureau Veritas  InfoStretch  PTC Software  Mindtree  Centre for Internet and Society (CIS)  Trimax IT Infrastructure & Services      intermediate        frequent

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Related Questions

  What are different ways to create String Object? Explain.
 How does making string as immutable helps with securing information ? How does String Pool pose a security threat ?
  Why Char array is preferred over String for storing password?
 Which memory segment holds String Pool in Java ?
 How and Why Strings are interned in Java ?
 What will be the output of following code

Integer x = 1;
Integer y = 2;
System.out.println(x == y);

What if you change 1 to "1" and Integer to String?
 What will be result of following code and why

Integer int1 = 1;
Integer int2 = 1;
String str1 = new String("str");
String str2 = new String("str");
String str3 = "str";
String str4 = "str";

      
System.out.println(int1 == int2);
System.out.println(str1 == str2);
System.out.println(str3 == str4);
 What is the purpose of String Pool ? Don't you think it's a performance overhead to have unnecessary check for string in string pool ?
 Why string pool concept has been introduced in string ?


Very frequently asked.Usually among first few questions.
  Q2. What is MVC ? Design
Anonymous
Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application

1. Controller receives the requests and handles overall control of the request
2. Model holds majority of the Business logic, and
3. View comprise of the view objects and GUI component

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