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What is garbage collection The runtime system keeps track of the memory that is allocated and is able to determine whether that memory is still useable. This work is usually done in background by a low-priority thread that is referred to as garbage collector. When the gc finds memory that is no longer accessible from … Read more
What is meant by Gesture Responder System? It is an internal system of React Native, which is responsible for managing the lifecycle of gestures in the system. React Native provides several different types of gestures to the users, such as tapping, sliding, swiping, and zooming. The responder system negotiates these touch interactions. Usually, it is … Read more
What is caller ? Same as caller principal. What is comment ? In an XML document, text that is ignored unless the parser is specifically told to recognize it. What is “application configuration resource file” ? An XML file used to configure resources for a JavaServer Faces application, to define navigation rules for the application, … Read more
What is the importance of the destroy() method in Servlet The destroy() method is called only once at the end of the life cycle of a servlet. This method gives your servlet a chance to close database connections, halt background threads, write cookie lists or hit counts to disk, and perform other such cleanup activities. … Read more
Explain XPath Absolute and XPath attributes. XPath Absolute: XPath Absolute enables users to mention the complete XPath location from the root HTML tag to the specific elements. Syntax: //html/body/tag1[index]/tag2[index]/…/tagN[index] Example: //html/body/div[2]/div/div[2]/div/div/div/fieldset/form/div[1]/input[1] XPath Attributes: XPath Attributes is always recommended when you don’t have a suitable id or name attribute for the element you want to locate. … Read more
What is the Collection interface The Collection interface provides support for the implementation of a mathematical bag – an unordered collection of objects that may contain duplicates. Which java.util classes and interfaces support event handling? The EventObject class and the EventListener interface support event processing. The sizeof operator is not a keyword. What is the class and interface in java to create thread … Read more
Explain the Migration Assistant tool in Microsoft Azure. The migration assistant tool examines our IIS installation and recognizes the sites that can be migrated to the cloud, featuring any components which can’t be relocated or not supported by the platform. This tool similarly creates websites and databases provided under the given Azure membership. How to … Read more
How DevOps is helpful to developers? DevOps is very helpful for developers to fix the bugs and quickly implement the new features. It also helps in more transparent communication between the team members. Explain pair programming regarding DevOps? Pair programming is an engineering practice of Extreme Programming Rules. In this case, two programmers work on … Read more
Which containers use a Flow layout as their default layout?- Panel and Applet classes use the FlowLayout as their default layout. What interface is extended by AWT event listeners All AWT event listeners extend the java.util.EventListener interface. Name four Container classes. Window, Frame, Dialog, FileDialog, Panel, Applet, or ScrollPane. What is the relationship between clipping and repainting When a window is repainted by … Read more
What is the difference between SOA and a Web service SOA is a software design principle and an architectural pattern for implementing loosely coupled, reusable and coarse grained services. You can implement SOA using any protocols such as HTTP, HTTPS, JMS, SMTP, RMI, IIOP (i.e. EJB uses IIOP), RPC etc. Messages can be in XML … Read more