Java Library

What is the purpose of the @XmlAttribute annotation in JAXB? A) To map a Java field to an XML attribute B) To map a Java field to an XML element C) To define the root element of the XML document D) To define the namespace of an XML element Answer: A) To map a Java […]

Which method is used to unmarshal an XML document to a Java object using JAXB? A) unmarshal() B) deserialize() C) convertToObject() D) readFromXML() Answer: A) unmarshal() Explanation: The unmarshal() method in JAXB is used to convert an XML document to a Java object. This process is known as unmarshalling. The unmarshal() method reads the XML

Which method is used to marshal a Java object to XML using JAXB? A) marshal() B) serialize() C) convertToXML() D) writeToXML() Answer: A) marshal() Explanation: The marshal() method in JAXB is used to convert a Java object to an XML document. This process is known as marshalling. The marshal() method writes the Java object to

How do you read an XML document using the SAX parser in Java? A) By implementing the ContentHandler interface B) By extending the DOMParser class C) By using the JAXBContext class D) By parsing the XML as a string Answer: A) By implementing the ContentHandler interface Explanation: To read an XML document using the SAX

Which method in the DOM API is used to create a new element in an XML document? A) createElement() B) createNode() C) newElement() D) addElement() Answer: A) createElement() Explanation: The createElement() method in the DOM API is used to create a new element in an XML document. This method creates an element node with the

What is the role of the @XmlElement annotation in JAXB? A) To map a Java field to an XML element B) To specify the root element of the XML document C) To define the structure of the XML document D) To define the type of XML elements Answer: A) To map a Java field to

Which annotation is used in JAXB to map a Java class to an XML element? A) @XmlElement B) @XmlType C) @XmlRootElement D) @XmlAccessorType Answer: C) @XmlRootElement Explanation: The @XmlRootElement annotation in JAXB is used to map a Java class to an XML element. This annotation indicates that the class represents the root element of the

How does JAXB simplify working with XML in Java? A) By allowing Java objects to be converted to and from XML B) By providing a tree structure for XML documents C) By offering a streaming interface for XML processing D) By defining the structure of XML documents Answer: A) By allowing Java objects to be

What does SAX stand for in the context of XML processing? A) Simple API for XML B) Standard API for XML C) Secure API for XML D) Streaming API for XML Answer: A) Simple API for XML Explanation: SAX stands for Simple API for XML. It is an event-driven, streaming API used to process XML

Which of the following is a feature of the DOM API in Java? A) Parses the entire XML document into a tree structure B) Provides a streaming interface for XML processing C) Serializes Java objects to XML D) Binds XML schemas to Java classes Answer: A) Parses the entire XML document into a tree structure

Which Java API is commonly used for processing XML documents? A) SAX B) DOM C) JAXB D) All of the above Answer: D) All of the above Explanation: Java provides several APIs for processing XML documents: SAX (Simple API for XML): An event-driven, streaming API for processing XML documents. DOM (Document Object Model): A tree-based

What is the purpose of XML in Java applications? A) To define the layout of Java GUI applications B) To store and transport data C) To compile Java programs D) To manage database connections Answer: B) To store and transport data Explanation: In Java applications, XML is primarily used to store and transport data. It

What does XML stand for? A) Extensible Markup Language B) External Markup Language C) Extra Markup Language D) Exclusive Markup Language Answer: A) Extensible Markup Language Explanation: XML stands for Extensible Markup Language. It is a flexible text format used to create structured documents by defining custom tags. XML is widely used for data interchange

Which Thymeleaf attribute is used to set the value of an input field? A) th:value B) th:text C) th:field D) th:data Answer: A) th:value Explanation: The th:value attribute in Thymeleaf is used to set the value of an input field dynamically. This attribute binds the value of the input field to a model attribute, making

What is the purpose of the th:if attribute in Thymeleaf? A) To conditionally include content based on a boolean expression B) To iterate over a collection C) To format dates D) To include an external template Answer: A) To conditionally include content based on a boolean expression Explanation: The th:if attribute in Thymeleaf is used

How do you display a variable’s value in Thymeleaf? A) [[${variable}]] B) {{variable}} C) ${variable} D) $[variable] Answer: A) [[${variable}]] Explanation: In Thymeleaf, the double square brackets [[${variable}]] are used to display the value of a variable within an HTML element. This syntax ensures that the value is properly escaped and rendered as text in

Which Thymeleaf attribute is used to iterate over a collection? A) th:each B) th:for C) th:loop D) th:repeat Answer: A) th:each Explanation: The th:each attribute in Thymeleaf is used to iterate over a collection of items. It works similarly to a for-each loop in Java, allowing you to render a list of elements dynamically. For

How do you include a fragment in a Thymeleaf template? A) th:insert B) th:include C) th:replace D) All of the above Answer: D) All of the above Explanation: Thymeleaf provides multiple ways to include fragments in templates: th:insert includes the fragment’s content inside an existing tag. th:include works similarly but can be more flexible with

Which file extension is typically used for Thymeleaf templates? A) .html B) .jsp C) .xhtml D) .xml Answer: A) .html Explanation: Thymeleaf templates are typically stored with the .html file extension. This allows them to be both viewed as standard HTML documents in a web browser and processed by the Thymeleaf engine to generate dynamic

What is Thymeleaf in Java? A) A Java template engine for web applications B) A JavaScript library C) A CSS framework D) A Java build tool Answer: A) A Java template engine for web applications Explanation: Thymeleaf is a modern Java template engine designed for web applications. It allows developers to create dynamic web pages

Which section of the pom.xml file is used to define project information such as the name, description, and version? A) <modelVersion> B) <project> C) <groupId> D) <parent> Answer: B) <project> Explanation: The <project> section of the pom.xml file contains the project’s metadata, including the name, description, version, group ID, and artifact ID. This section provides

What is the difference between mvn clean install and mvn clean package? A) mvn install installs the package to the local repository, while mvn package only creates the package B) mvn package installs the package to the local repository, while mvn install only creates the package C) There is no difference between the two commands

How do you specify a repository in Maven? A) By adding a <repository> element within the <repositories> section B) By adding a <pluginRepository> element within the <repositories> section C) By adding a <dependency> element within the <repositories> section D) By adding a <plugin> element within the <repositories> section Answer: A) By adding a <repository> element

What is the purpose of the dependencyManagement section in Maven? A) To manage versions of dependencies in child projects B) To configure Maven plugins C) To define the project’s main dependencies D) To specify the repository settings Answer: A) To manage versions of dependencies in child projects Explanation: The <dependencyManagement> section in Maven is used

How do you configure a Maven plugin in the pom.xml file? A) By adding a <plugin> element within the <build> section B) By adding a <dependency> element within the <dependencies> section C) By adding a <repository> element within the <repositories> section D) By adding a <plugin> element within the <dependencyManagement> section Answer: A) By adding