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.
Root Log level of DEBUG will print all
Root Log Level of INFO will print INFO, WARN and ERROR
Root Log level of WARN will print WARN and ERROR
Root Log level of ERROR will print ERROR alone
Help us improve. Please let us know the company, where you were asked this question :
Ans. It depends on how severe the exception is. If the exception is completely unexpected and breaks the request, It should be logged as ERROR or FATAL. If it's not expected but we can live with it and the application request continue in-spite of it, It should be WARN. If it's expected , it can be just INFO.
Help us improve. Please let us know the company, where you were asked this question :
Ans. Info Messages are something which we would like to see even if the application is in best of state. DEBUG messages are usually something that we would like to see while debugging some problem. DEBUG is lower level than Info. Any message logged with info gets printed if the Root level set is DEBUG.
Help us improve. Please let us know the company, where you were asked this question :
Ans. There is a property called "filePattern" within appender that regulates where the backed up files will be created for rolling logs. It actually contains the absolute path which can be modified to have backed up logs within some other directory.
Help us improve. Please let us know the company, where you were asked this question :
Ans. array is traversed from first element to last element. Here current element is compared with next element. If current element is greater than next element it is swapped.
Help us improve. Please let us know the company, where you were asked this question :
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 :
More than 3000 questions in repository.
Discuss 
Asked in 1 Companies
Try 2 Question(s) Test
expert
Which of the following session method is used to disassociate / disconnect all objects from the session
