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Design - Interview Questions and Answers for 'Cerner' - 4 question(s) found - Order By Newest | |||||||||||||||||||||||||||
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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 | |||||||||||||||||||||||||||
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Ans. TDD is a development process that involves short iterations: first an automated test case is written. Then, the code is written to pass that test, and finally one refactors the new code to acceptable standards. | |||||||||||||||||||||||||||
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Ans. The Model/View/Controller pattern, a strategy for dividing responsibility in a GUI component. The model is the data for the component. The view is the visual presentation of the component on the screen. The controller is responsible for reacting to events by changing the model. According to the MVC pattern, these responsibilities should be handled by different objects. | |||||||||||||||||||||||||||
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Ans. OSGI is open service gateway initiative, its used as java framework for developing and deploying the modular softwares. | |||||||||||||||||||||||||||
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