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InvalidPathException.java
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130 lines (120 loc) · 3.33 KB
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/*
* 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;
/**
* Unchecked exception thrown when path string cannot be converted into a
* {@link Path} because the path string contains invalid characters, or
* the path string is invalid for other file system specific reasons.
*/
public class InvalidPathException
extends IllegalArgumentException
{
static final long serialVersionUID = 4355821422286746137L;
private String input;
private int index;
/**
* Constructs an instance from the given input string, reason, and error
* index.
*
* @param input the input string
* @param reason a string explaining why the input was rejected
* @param index the index at which the error occurred,
* or <tt>-1</tt> if the index is not known
*
* @throws NullPointerException
* if either the input or reason strings are <tt>null</tt>
*
* @throws IllegalArgumentException
* if the error index is less than <tt>-1</tt>
*/
public InvalidPathException(String input, String reason, int index) {
super(reason);
if ((input == null) || (reason == null))
throw new NullPointerException();
if (index < -1)
throw new IllegalArgumentException();
this.input = input;
this.index = index;
}
/**
* Constructs an instance from the given input string and reason. The
* resulting object will have an error index of <tt>-1</tt>.
*
* @param input the input string
* @param reason a string explaining why the input was rejected
*
* @throws NullPointerException
* if either the input or reason strings are <tt>null</tt>
*/
public InvalidPathException(String input, String reason) {
this(input, reason, -1);
}
/**
* Returns the input string.
*
* @return the input string
*/
public String getInput() {
return input;
}
/**
* Returns a string explaining why the input string was rejected.
*
* @return the reason string
*/
public String getReason() {
return super.getMessage();
}
/**
* Returns an index into the input string of the position at which the
* error occurred, or <tt>-1</tt> if this position is not known.
*
* @return the error index
*/
public int getIndex() {
return index;
}
/**
* Returns a string describing the error. The resulting string
* consists of the reason string followed by a colon character
* (<tt>':'</tt>), a space, and the input string. If the error index is
* defined then the string <tt>" at index "</tt> followed by the index, in
* decimal, is inserted after the reason string and before the colon
* character.
*
* @return a string describing the error
*/
public String getMessage() {
StringBuffer sb = new StringBuffer();
sb.append(getReason());
if (index > -1) {
sb.append(" at index ");
sb.append(index);
}
sb.append(": ");
sb.append(input);
return sb.toString();
}
}