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Interview Questions and Answers for 'Ptc' - 3 question(s) found - Order By Newest

Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc )
  Q1. What is Dependency Injection or IOC ( Inversion of Control ) ?Design

Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.

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   Like      Discuss      Correct / Improve     design patterns   ioc ( Inversion of Control )  dependency injection     Nucleus Software Exports  HCL Technologies  Tata Consultancy (TCS)  HCL  Infosys  Cognizant (CTS)  Barclays  General Electric  Infosys Technologies  Elsevier  Sabre  ZapCom  Nike  Sogeti  CSG International  Lowes  DWS  Mitsui Bussan Logistics  Payment Processing Partners  Liquidnet  AmTrust Financial  VectorForm  Cybage  Vanderbilt University  Cigniti  Accenture  Ball Aerospace  GE Healthcare  1-800 Contacts  VinSolutions  Arrow Electronics  Monitise  Avenue Code  Thetus Corporation  Shodogg  Levi9  BuildLinks  Suyati Technologies  Kanerika Software  Alliance Inspection Management  Promega  Victorious  Zoll Data Systems  Parkmobile  PerceptiMed  Crate and Barrel  Carbonite  Concur  Codazen  GlobalLogic  AccuSoft  Attinad  Tillster  AppRiver  TrustPilot  Pearson  Kony  Art Technology Group  VeriSign  Accion Labs  IGS Energy  National Bankruptcy Services  RealPage  Green Dot  Indecomm Global  bebo Technologies  Open Solutions  Xoriant  NCR  Macmillan Cancer Support  NetSuite  Asynchrony Labs  DealDash  Vizio  Fiserv  Federal Reserve Bank of Minneapolis  Tinder  FICO  Trustwave      intermediate        frequent


Related Questions

  Name few Dependency Injection frameworks ?
 What are different types of dependency injections ?
  What are the various Auto Wiring types in Spring ?
  What is the difference betweeen @Inject and @Autowired ?
 Which of the following Java features facilitates Dependency Injection - Inheritance or Composition ?
 What are the different ways in which dependency injection can be done using Spring Framework ?
 Difference between constructor and setter injection ?
 What are the benefits of Dependency Injection or IOC ?
 Which of the OOP's features facilitate dependency injection ?


  Q2. 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

Try 2 Question(s) Test


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 ?


 Q3. What are the phases of the JSP life cycle ?Java EE
Admin
info@buggybread.com
Ans. Translation of JSP PageCompilation of JSP PageClassloading (class file is loaded by the classloader)Instantiation (Object of the Generated Servlet is created).Initialization ( jspInit() method is invoked by the container).Reqeust processing ( _jspService() method is invoked by the container).Destroy ( jspDestroy() method is invoked by the container).

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   Like      Discuss      Correct / Improve     j2ee   servlets   servelets   web application   jsp   jsp life cycle   mindtree     Span Infotech  PTC  Cybage  iNautix Technologies  TechAspect  Brillio  Modus Information Systems  SAG Infotech   TechProcess Payment Services


Related Questions

  What is a config Object?
  What is a pageContext Object?
  Difference between the jsp scriptlet tag and jsp declaration tag?
  What are JSP directives ? What are different types of directives ?
 What are JSP Scriptlets?
 How can we remove a JSP page from getting cached ?
 Ho do you share / transfer variables between JSP pages ?
 Difference between Include Directive and include action in jsp
 Difference between import and include directive in jsp




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