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Interview Questions and Answers for 'Blue star infotech' - 2 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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![]() Integer x = 1; Integer y = 2; System.out.println(x == y); What if you change 1 to "1" and Integer to String? | |||||
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Ans. Abstraction, Encapsulation, Polymorphism , Composition and Inheritance | |||||
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![]() or Explain OOPs Principles or Explain OOPs Concepts or Explain OOPs features or Tell me something about OOPs | |||||
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