Enlist few advantages of inheritance?
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why the abstract class has default constructor?
How to disable caching on back button of the browser?
Why should we use singleton pattern instead of static class?
What about instanceof operator in java?
Why we use protected in java?
Can we serialize singleton class?
What is interface and its use?
How do you override a method in java?
Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy() { } } 12. class C extends B { public void x() {} } And: 20. java.util.List list = new java.util.ArrayList(); 21. list.add(new B()); 22. list.add(new C()); 23. for (A a:list) { 24. a.x(); 25. a.y();; 26. } What is the result? 1 Compilation fails because of an error in line 25. 2 The code runs with no output. 3 An exception is thrown at runtime. 4 Compilation fails because of an error in line 20.
Explain about doubly linked list
0 Answers Aditi Placement Service,
Explain the concept of proper inheritance?
0 Answers Thomson Reuters, Virtusa,
can we declare private class in java file?