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| Design - Interview Questions and Answers for 'Amd' - 3 question(s) found - Order By Newest | ||||
 Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini etc based on multiple feedback ) and Epam Systems | ||||
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| Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory. x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object. Sample code: String x = new String("str"); String y = new String("str"); System.out.println(x == y); // prints false System.out.println(x.equals(y)); // prints true | ||||
 Sample Code for equals | ||||
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 Discuss Correct / Improve  java string comparison string object class == equals object equality operator == vs equals equals vs ==  Asked in 294 Companies  basic  frequent | ||||
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 Related Questions | ||||
 What is the difference between = and == in Java ? | ||||
| How is == operator different for objects and primitive types ? | ||||
| 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? | ||||
| Very frequently asked.Usually among first few questions. | ||||
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| 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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| 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 | ||||
| Explain Flow of Spring MVC ? | ||||
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| Why Struts 1 Classes are not Thread Safe whereas Struts 2 classes are thread safe ? | ||||
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| 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? | ||||
| Very Frequently asked to Senior Software Engineers or Developers. | ||||
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| Ans. [Open Ended Answer] | ||||
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| Discuss Correct / Improve design patterns Asked in 17 Companies intermediate frequent | ||||
| Related Questions | ||||
| What is Dependency Injection or IOC ( Inversion of Control ) ? | ||||
| What is MVC ? | ||||
| What are the Wrapper classes available for primitive types ? | ||||
| Difference between Factory and Abstract Factory Design Pattern ? | ||||
| Difference between Factory and Builder Design Pattern ? | ||||
| Difference between Builder and Composite ? | ||||
| Difference between Factory and Strategy Design Pattern ? | ||||
| What is the difference between subject and observable ? | ||||
| What are the disadvantages of Design Patterns ? | ||||
| What Design pattern Wrapper Classes implement ? | ||||
