Polish FileSystemResource

spring-core/src/main/java/org/springframework/core/io/FileSystemResource.java

@@ -161,6 +161,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	/**
 	 * This implementation returns whether the underlying file exists.
 	 * @see java.io.File#exists()
+	 * @see java.nio.file.Files#exists(Path, java.nio.file.LinkOption...)
 	 */
 	@Override
 	public boolean exists() {
@@ -172,6 +173,8 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	 * (and corresponds to an actual file with content, not to a directory).
 	 * @see java.io.File#canRead()
 	 * @see java.io.File#isDirectory()
+	 * @see java.nio.file.Files#isReadable(Path)
+	 * @see java.nio.file.Files#isDirectory(Path, java.nio.file.LinkOption...)
 	 */
 	@Override
 	public boolean isReadable() {
@@ -180,8 +183,8 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	}
 
 	/**
-	 * This implementation opens a NIO file stream for the underlying file.
-	 * @see java.io.FileInputStream
+	 * This implementation opens an NIO file stream for the underlying file.
+	 * @see java.nio.file.Files#newInputStream(Path, java.nio.file.OpenOption...)
 	 */
 	@Override
 	public InputStream getInputStream() throws IOException {
@@ -198,6 +201,8 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	 * (and corresponds to an actual file with content, not to a directory).
 	 * @see java.io.File#canWrite()
 	 * @see java.io.File#isDirectory()
+	 * @see java.nio.file.Files#isWritable(Path)
+	 * @see java.nio.file.Files#isDirectory(Path, java.nio.file.LinkOption...)
 	 */
 	@Override
 	public boolean isWritable() {
@@ -207,7 +212,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 
 	/**
 	 * This implementation opens a FileOutputStream for the underlying file.
-	 * @see java.io.FileOutputStream
+	 * @see java.nio.file.Files#newOutputStream(Path, java.nio.file.OpenOption...)
 	 */
 	@Override
 	public OutputStream getOutputStream() throws IOException {
@@ -217,6 +222,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	/**
 	 * This implementation returns a URL for the underlying file.
 	 * @see java.io.File#toURI()
+	 * @see java.nio.file.Path#toUri()
 	 */
 	@Override
 	public URL getURL() throws IOException {
@@ -226,6 +232,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	/**
 	 * This implementation returns a URI for the underlying file.
 	 * @see java.io.File#toURI()
+	 * @see java.nio.file.Path#toUri()
 	 */
 	@Override
 	public URI getURI() throws IOException {
@@ -343,6 +350,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	/**
 	 * This implementation returns the name of the file.
 	 * @see java.io.File#getName()
+	 * @see java.nio.file.Path#getFileName()
 	 */
 	@Override
 	public String getFilename() {
@@ -353,6 +361,7 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	 * This implementation returns a description that includes the absolute
 	 * path of the file.
 	 * @see java.io.File#getAbsolutePath()
+	 * @see java.nio.file.Path#toAbsolutePath()
 	 */
 	@Override
 	public String getDescription() {
@@ -361,16 +370,18 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 
 
 	/**
-	 * This implementation compares the underlying File references.
+	 * This implementation compares the underlying file paths.
+	 * @see #getPath()
 	 */
 	@Override
-	public boolean equals(@Nullable Object other) {
-		return (this == other || (other instanceof FileSystemResource &&
-				this.path.equals(((FileSystemResource) other).path)));
+	public boolean equals(@Nullable Object obj) {
+		return (this == obj || (obj instanceof FileSystemResource other &&
+				this.path.equals(other.path)));
 	}
 
 	/**
-	 * This implementation returns the hash code of the underlying File reference.
+	 * This implementation returns the hash code of the underlying file path.
+	 * @see #getPath()
 	 */
 	@Override
 	public int hashCode() {