/*
* Copyright (c) 2007, 2009, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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package java.nio.file;
import java.io.IOException;
/**
* Thrown when a file system operation fails on one or two files. This class is
* the general class for file system exceptions.
*
* @since 1.7
*/
public class FileSystemException
extends IOException
{
static final long serialVersionUID = -3055425747967319812L;
private final String file;
private final String other;
/**
* Constructs an instance of this class. This constructor should be used
* when an operation involving one file fails and there isn't any additional
* information to explain the reason.
*
* @param file
* a string identifying the file or {@code null} if not known.
*/
public FileSystemException(String file) {
super((String)null);
this.file = file;
this.other = null;
}
/**
* Constructs an instance of this class. This constructor should be used
* when an operation involving two files fails, or there is additional
* information to explain the reason.
*
* @param file
* a string identifying the file or {@code null} if not known.
* @param other
* a string identifying the other file or {@code null} if there
* isn't another file or if not known
* @param reason
* a reason message with additional information or {@code null}
*/
public FileSystemException(String file, String other, String reason) {
super(reason);
this.file = file;
this.other = other;
}
/**
* Returns the file used to create this exception.
*
* @return the file (can be {@code null})
*/
public String getFile() {
return file;
}
/**
* Returns the other file used to create this exception.
*
* @return the other file (can be {@code null})
*/
public String getOtherFile() {
return other;
}
/**
* Returns the string explaining why the file system operation failed.
*
* @return the string explaining why the file system operation failed
*/
public String getReason() {
return super.getMessage();
}
/**
* Returns the detail message string.
*/
@Override
public String getMessage() {
if (file == null && other == null)
return getReason();
StringBuilder sb = new StringBuilder();
if (file != null)
sb.append(file);
if (other != null) {
sb.append(" -> ");
sb.append(other);
}
if (getReason() != null) {
sb.append(": ");
sb.append(getReason());
}
return sb.toString();
}
}