Gateway for Preparing Interviews
What is the use of Amazon Transfer Acceleration Service? An Amazon Transfer Acceleration Service is a service that enables fast and secure transfer of data between your client and S3 bucket. What is an EIP? EIP (Elastic IP address) is a service provided by an EC2 instance. It is basically a static IP address attached … Read more
What is NDK? NDK stands for Native Development Kit. By using NDK, you can develop a part of an app using native language such as C/C++ to boost the performance. List the various storages that are provided by Android. The various storage provided by android are: Shared Preferences Internal Storage External Storage SQLite Databases Network … Read more
What is use of parseQueryString Parses a query string and builds a hashtable of key-value pairs, where the values are arrays of strings. The query string should have the form of a string packaged by the GET or POST method. What Class.forName will do while loading drivers It is used to create an instance of … Read more
What are the similarities between React and React Native? The most common similarities between React and React Native are: React Lifecycle Methods React Components React States and Props Redux Libraries What are the advantages of React Native? React Native provides many advantages for building mobile applications. Some of the essential benefits of using React Native … Read more
What invokes a thread’s run() method After a thread is started, via its start() method or that of the Thread class, the JVM invokes the thread’srun() method when the thread is initially executed. When a thread is created and started, what is its initial state A thread is in the ready state after it has been created and started. How … Read more
What is the difference between the JDK 1.02 event model and the event-delegation model introduced with JDK 1.1? The JDK 1.02 event model uses an event inheritance or bubbling approach. In this model, components are required to handle their own events. If they do not handle a particular event, the event is inherited by (or … Read more
What is the difference between applications and applets a)Application must be run on local machine whereas applet needs no explicit installation on local machine. b)Application must be run explicitly within a java-compatible virtual machine whereas applet loads and runs itself automatically in a java-enabled browser. d)Application starts execution with its main method whereas applet starts … Read more
Why doesn’t Collection extend Cloneable and Serializable From Sun FAQ Page: Many Collection implementations (including all of the ones provided by the JDK) will have a public clone method, but it would be mistake to require it of all Collections. For example, what does it mean to clone a Collection that’s backed by a terabyte … Read more
Name two subclasses of the Text Component class. TextField and TextArea. Where can static modifiers be used They can be applied to variables, methods and even a block of code, static methods and variables are not associated with any instance of class. What advantage do Java’s layout managers provide over traditional windowing systems Java uses layout managers to … Read more
What is URI? What is the purpose of web-based service and what is it’s format? URI stands for Uniform Resource Identifier. It is a string of characters designed for unambiguous identification of resources and extensibility by the URI scheme. The purpose of URI is to locate the resource on the server hosting of the web … Read more