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What is the usage of NgUpgrade in Angular 8? The NgModules in Angular 8 is used for the following things: The NgModule is a class marked by the @NgModule decorator where the @NgModule decorator is used to take a metadata object that describes how to compile a component’s template and how to create an injector … Read more
Describe the AngularJS boot process. When a page is loaded into the browser, several things happen: HTML document file gets loaded, and evaluated by the browser. AngularJS JavaScript file gets loaded, and the angular global object is created. Next, JavaScript file which is responsible for registering the controller functions is executed. AngularJS scans through the … 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
What is the HTTP protocol supported by REST? GET: GET is used to request data from the specified resource. GET request can be cached and bookmark. It remains in the browser history and has length restriction. When dealing with sensitive data GET requests should not be used. POST: POST is used to send data to server for … Read more
Does setting the serialVersionUID class field improve Java serialization performance? Declaring an explicit serialVersionUID field in your classes saves some CPU time only the first time the JVM process serializes a given Class. However the gain is not significant, In case when you have not declared the serialVersionUID its value is computed by JVM once … Read more
If a variable is declared as private, where may the variable be accessed A private variable may only be accessed within the class in which it is declared. Name the eight primitive Java types. The eight primitive types are byte, char, short, int, long, float, double, and boolean. Name three subclasses of the Component class Box.Filler, Button, Canvas, Checkbox, Choice, Container, Label, List, Scrollbar, or TextComponent. How are this and super used … Read more
What is the purpose of button groups? Button groups are used for the placement of more than one buttons in the same line. What is distributed cache in Hadoop? Distributed cache is a facility provided by MapReduce Framework. It is provided to cache files (text, archives etc.) at the time of execution of the job. … Read more
How do you recognize a bad link? You should know that some links are more valuable than others. Some irrelevant, misleading or broken links can mislead your users and harm your site’s ranking. Inbound links from high-ranking, authority websites are better than links from low-ranking websites. What do you know about PPC? PPC stands for … Read more
What is the Collections API? The Collections API is a set of classes and interfaces that support operations on collections of objects. What is an Iterator interface? The Iterator interface is used to step through the elements of a Collection. The Iterator is an interface, used to traverse through the elements of a Collection. It is not … Read more
What are the four types of J2EE modules? Application client module Web module Enterprise JavaBeans module Resource adapter module How can I set a cookie in JSP?- response. setHeader(”Set-Cookie”, “cookie string”); To give the response-object to a bean, write a method setResponse (HttpServletResponse response) – to the bean, and in jsp-file:<% bean. setResponse (response); %> … Read more