Java Module java.xml Package javax.xml.stream Interface XMLResolver（JDK11）

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All Known Subinterfaces:

CatalogResolver
```
public interface XMLResolver
```
This interface is used to resolve resources during an XML parse. If an application wishes to perform custom entity resolution it must register an instance of this interface with the XMLInputFactory using the setXMLResolver method.

Since:

1.6

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`resolveEntity(String publicID, String systemID, String baseURI, String namespace)`	Retrieves a resource.

- Method Detail
  - resolveEntity
```
Object resolveEntity(String publicID,
                     String systemID,
                     String baseURI,
                     String namespace)
              throws XMLStreamException
```
    Retrieves a resource. This resource can be of the following three return types: (1) java.io.InputStream (2) javax.xml.stream.XMLStreamReader (3) java.xml.stream.XMLEventReader. If this method returns null the processor will attempt to resolve the entity using its default mechanism.
    
    Parameters:
    
    publicID - The public identifier of the external entity being referenced, or null if none was supplied.
    
    systemID - The system identifier of the external entity being referenced.
    
    baseURI - Absolute base URI associated with systemId.
    
    namespace - The namespace of the entity to resolve.
    
    Returns:
    
    The resource requested or null.
    
    Throws:
    
    XMLStreamException - if there was a failure attempting to resolve the resource.

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