More than 3000 questions in repository. There are more than 900 unanswered questions. Click here and help us by providing the answer. Have a video suggestion. Click Correct / Improve and please let us know.
Ans. We can simply find it by checking the criteria of a tree. A tree will not contain a cycle, so if there is any cycle in the graph, it is not a tree. We can check it using another approach, if the graph is connected and it has V-1 edges, it could be a tree. Here V is the number of vertices in the graph
Help us improve. Please let us know the company, where you were asked this question :
Ans. Priority inversion is a problematic scenario in scheduling in which a high priority task is indirectly preempted by a lower priority task effectively inverting the relative priorities of the two tasks.
Help us improve. Please let us know the company, where you were asked this question :
Ans. Include directive includes the file at translation time (the phase of JSP life cycle where the JSP gets converted into the equivalent servlet) whereas the include action includes the file at runtime.
Help us improve. Please let us know the company, where you were asked this question :
Ans. setMaxUploadSize is used to set the maximum size of uploads that can be made in a request whereas setMaxUploadSizePerFile sets the maximum size per uploaded file.
Help us improve. Please let us know the company, where you were asked this question :
Ans. Java provides a default constructor ( no argument ) if no constructor is provided by the programmer. Java makes a check during pre compilation if there is any constructor provided by the programmer. If any constructor is provided, Java understands that programmer has provided all the mechanism for initialization and construction of the object and may not even intend to create objects by calling a no argument constructor. For example - One may like to have objects created with self defined state otherwise restrict its creation.
We make the constructor private if we want to make a class singleton as we would like to restrict creation of new objects using new operator and default constructor. Similar could be the situation wherein we would like to construct objects in a particular manner only.
Help us improve. Please let us know the company, where you were asked this question :
Ans. I would avoid that. If we need to initialize member elements differently on the basis of some condition, I would prefer having overloaded constructors. I don't see a need to have a loop for initializing member elements unless the count of elements is huge and they all need to be initialized with common value.
Help us improve. Please let us know the company, where you were asked this question :
Ans. Classes having only static methods in java is called util classes. As they don't have specific object state, they are basically intend to have shared code and state through static elements and methods. They save resources by sharing code.
Help us improve. Please let us know the company, where you were asked this question :
This question is usually asked to check if you gel good with people of different background and are no racist at work. Be very cautious about answering such questions as any negative answer may lead to immediate rejection in spite of an excellent technical rounds.
Help us improve. Please let us know the company, where you were asked this question :
More than 3000 questions in repository.
Discuss 
binary tree 
Asked in 1 Companies
Try 2 Question(s) Test
expert
frequent
Which of the following session method is used to disassociate / disconnect all objects from the session
