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

Frequently asked in Infosys India
  Q1. What is a String Pool ?Core Java
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     Asked in 31 Companies      intermediate        frequent

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Related Questions

  What are different ways to create String Object? Explain.
  Why Char array is preferred over String for storing password?
 How does making string as immutable helps with securing information ? How does String Pool pose a security threat ?
 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
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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   Like         Discuss         Correct / Improve     j2ee   mvc   mvc design pattern   design pattern   struts   spring   web application   web frameworks   ebay     Asked in 60 Companies      basic        frequent

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Related Questions

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  What are the benefits of using Spring Framework ?
  Why Struts 1 Classes are not Thread Safe whereas Struts 2 classes are thread safe ?
  What bean scopes does Spring support? Explain them.
  Which MVC is struts2 based on ?
  What are different modules of spring ?
  What is Spring configuration file?
  Q: What is default scope of bean in Spring framework?
  What is bean auto wiring?



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