JAXB 面接の質問と回答

質問 1. What Is XML Binding?

Maps XML to in-memory objects according to a schema. Generates classes to represent XML elements so developers don't have to write them the binding compiler does this the classes follow JavaBeans property access conventions. Supports three primary operations: 

質問 2. What is XML Binding Relationships?

The relationships between the components involved in XML binding (data binding) are shown below:

質問 3. Why Use XML Binding?

• It's not necessary. Everything that must be done with XML can be done with SAX and DOM.
• It's easier, don't have to write as much code, don't have to learn SAX and/or DOM.
• It's less error-prone, all the features of the schema are utilized, don't have to remember to manually implement them.
• It can allow customization of the XML structure unlike XMLEncoder and XMLDecoder in the java.beans package.

質問 4. Please explain JAXB Use Cases.

• Create/Read/Modify XML using Java but without using SAX or DOM.
• Validate user input using rules described in XML Schemas.
• Use XML-based configuration files, access their values, write tools that creates and modifies these files.

質問 5. What are the goals of JAXB?

• Easy to use require minimal XML knowledge, don't require SAX/DOM knowledge.
• Customizable can customize mapping of XML to Java.
• Portable can change JAXB implementation without changing source code.
• Deliver soon, deliver core functionality ASAP.
• Follow standard design and naming conventions in generated Java.
• Match schema, easy to identify generated Java components that correspond to schema features.
• Hide plumbing encapsulate implementation of unmarshalling, marshalling and validation.
• Validation, on demand validate objects without requiring marshalling.
• Preserve object equivalence (round tripping), marshalling objects to XML and unmarshalling back to objects results in equivalent objects.