Module java.compiler

Package javax.tools

Class SimpleJavaFileObject

java.lang.Object

javax.tools.SimpleJavaFileObject

All Implemented Interfaces:

FileObject, JavaFileObject

public class SimpleJavaFileObject
extends Object
implements JavaFileObject

Provides simple implementations for most methods in JavaFileObject. This class is designed to be subclassed and used as a basis for JavaFileObject implementations. Subclasses can override the implementation and specification of any method of this class as long as the general contract of JavaFileObject is obeyed.

Since:

1.6

Nested Class Summary

Nested classes/interfaces declared in interface javax.tools.JavaFileObject

JavaFileObject.Kind

Field Summary

Fields

Modifier and Type	Field	Description
protected final JavaFileObject.Kind	kind	The kind of this file object.
protected final URI	uri	A URI for this file object.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SimpleJavaFileObject(URI uri, JavaFileObject.Kind kind)	Construct a SimpleJavaFileObject of the given kind and with the given URI.

Method Summary

Modifier and Type	Method	Description
boolean	delete()	This implementation does nothing.
Modifier	getAccessLevel()	This implementation returns null.
CharSequence	getCharContent(boolean ignoreEncodingErrors)	This implementation always throws UnsupportedOperationException.
JavaFileObject.Kind	getKind()	Returns the kind of this file object.
long	getLastModified()	This implementation returns 0L.
String	getName()	Returns a user-friendly name for this file object.
NestingKind	getNestingKind()	This implementation returns null.
boolean	isNameCompatible(String simpleName, JavaFileObject.Kind kind)	This implementation compares the path of its URI to the given simple name.
InputStream	openInputStream()	This implementation always throws UnsupportedOperationException.
OutputStream	openOutputStream()	This implementation always throws UnsupportedOperationException.
Reader	openReader(boolean ignoreEncodingErrors)	Wraps the result of getCharContent(boolean) in a Reader.
Writer	openWriter()	Wraps the result of openOutputStream in a Writer.
URI	toUri()	Returns a URI identifying this file object.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

uri

protected final URI uri

A URI for this file object.

kind

protected final JavaFileObject.Kind kind

The kind of this file object.

Constructor Details

SimpleJavaFileObject

protected SimpleJavaFileObject(URI uri,
 JavaFileObject.Kind kind)

Construct a SimpleJavaFileObject of the given kind and with the given URI.

Parameters:

uri - the URI for this file object

kind - the kind of this file object

Method Details

toUri

public URI toUri()

Description copied from interface: FileObject

Returns a URI identifying this file object.

Specified by:

toUri in interface FileObject

Returns:

a URI

getName

public String getName()

Description copied from interface: FileObject

Returns a user-friendly name for this file object. The exact value returned is not specified but implementations should take care to preserve names as given by the user. For example, if the user writes the filename "BobsApp\Test.java" on the command line, this method should return "BobsApp\Test.java" whereas the toUri method might return file:///C:/Documents%20and%20Settings/UncleBob/BobsApp/Test.java.

Specified by:

getName in interface FileObject

Returns:

a user-friendly name

openInputStream

public InputStream openInputStream()
                            throws IOException

This implementation always throws UnsupportedOperationException. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

openInputStream in interface FileObject

Returns:

an InputStream

Throws:

IOException - if an I/O error occurred

openOutputStream

public OutputStream openOutputStream()
                              throws IOException

This implementation always throws UnsupportedOperationException. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

openOutputStream in interface FileObject

Returns:

an OutputStream

Throws:

IOException - if an I/O error occurred

openReader

public Reader openReader(boolean ignoreEncodingErrors)
                  throws IOException

Wraps the result of getCharContent(boolean) in a Reader. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

openReader in interface FileObject

Parameters:

ignoreEncodingErrors - ignore encoding errors if true

Returns:

a Reader wrapping the result of getCharContent

Throws:

IllegalStateException - if this file object was opened for writing and does not support reading

UnsupportedOperationException - if this kind of file object does not support character access

IOException - if an I/O error occurred

getCharContent

public CharSequence getCharContent(boolean ignoreEncodingErrors)
                            throws IOException

This implementation always throws UnsupportedOperationException. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

getCharContent in interface FileObject

Parameters:

ignoreEncodingErrors - ignore encoding errors if true

Returns:

a CharSequence if available; null otherwise

Throws:

IOException - if an I/O error occurred

openWriter

public Writer openWriter()
                  throws IOException

Wraps the result of openOutputStream in a Writer. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

openWriter in interface FileObject

Returns:

a Writer wrapping the result of openOutputStream

Throws:

IllegalStateException - if this file object was opened for reading and does not support writing

UnsupportedOperationException - if this kind of file object does not support character access

IOException - if an I/O error occurred

getLastModified

public long getLastModified()

This implementation returns 0L. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

getLastModified in interface FileObject

Returns:

0L

delete

public boolean delete()

This implementation does nothing. Subclasses can change this behavior as long as the contract of FileObject is obeyed.

Specified by:

delete in interface FileObject

Returns:

false

getKind

public JavaFileObject.Kind getKind()

Description copied from interface: JavaFileObject

Returns the kind of this file object.

Specified by:

getKind in interface JavaFileObject

Returns:

this.kind

isNameCompatible

public boolean isNameCompatible(String simpleName,
 JavaFileObject.Kind kind)

This implementation compares the path of its URI to the given simple name. This method returns true if the given kind is equal to the kind of this object, and if the path is equal to simpleName + kind.extension or if it ends with "/" + simpleName + kind.extension.

This method calls getKind() and toUri() and does not access the fields uri and kind directly.

Subclasses can change this behavior as long as the contract of JavaFileObject is obeyed.

Specified by:

isNameCompatible in interface JavaFileObject

Parameters:

simpleName - a simple name of a class

kind - a kind

Returns:

true if this file object is compatible; false otherwise

getNestingKind

public NestingKind getNestingKind()

This implementation returns null. Subclasses can change this behavior as long as the contract of JavaFileObject is obeyed.

Specified by:

getNestingKind in interface JavaFileObject

Returns:

the nesting kind, or null if the nesting kind is not known

getAccessLevel

public Modifier getAccessLevel()

This implementation returns null. Subclasses can change this behavior as long as the contract of JavaFileObject is obeyed.

Specified by:

getAccessLevel in interface JavaFileObject

Returns:

the access level