Gateway for Preparing Interviews
What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy The Reader/Writer class hierarchy is character-oriented, and the InputStream/OutputStream class hierarchy is byte-oriented. How is an argument passed in java, by copy or by reference What is a modulo operator This operator gives the value which is related to the remainder of a divisione.g x=7%4 … Read more
What is KNN imputation method? KNN imputation method seeks to impute the values of the missing attributes using those attribute values that are nearest to the missing attribute values. The similarity between two attribute values is determined using the distance function. What is the difference between R-squared and adjusted R-squared? R-squared measures the proportion of … Read more
What is JSP directive A JSP element that gives an instruction to the JSP container and is interpreted at translation time. How will you handle the runtime exception in your jsp page The errorPage attribute of the page directive can be used to catch run-time exceptions automatically and then forwarded to an error processing page. … Read more
When do we say an exception is not handled There is no catch block that names either the class of exception that has been thrown or a class of exception that is a parent class of the one that has been thrown, then the exception is considered to be unhandled, in such condition the execution … Read more
Why do you want to work with this company? You need to go prepared for this interview question. If their working style suits yours, you can discuss it. If the job you are applying for is the next logical step for your current job, tell them that. Or, even something like you being attracted to … Read more
What is the usage of NVL() function? The NVL() function is used to convert NULL value to the other value. NVL() function is used in Oracle it is not in SQL and MySQL server. Instead of NVL() function MySQL have IFNULL() and SQL Server have ISNULL() function. What are the set operators in SQL? SQL … Read more
Difference between JSP include directive and JSP include action <%@ include file=”filename” %> is the JSP include directive.At JSP page translation time, the content of the file given in the include directive is ‘pasted’ as it is, in the place where the JSP include directive is used. Then the source JSP page is converted into … Read more
What is an expert system? What are the characteristics of an expert system? An expert system is an Artificial Intelligence program that has expert-level knowledge about a specific area and how to utilize its information to react appropriately. These systems have the expertise to substitute a human expert. Their characteristics include: High performance Adequate response … Read more
What is a database system? The collection of database and DBMS software together is known as a database system. Through the database system, we can perform many activities such as- The data can be stored in the database with ease, and there are no issues of data redundancy and data inconsistency. The data will be … Read more
How can a Scrum Master contribute to Sprint Planning in a way that enables the Scrum Team to work only on the most valuable user stories? It is the prerogative of the Product Owner to define the business objective of an upcoming Sprint by identifying and ranking the most valuable user stories in the … Read more