Determining If Two Filename Paths Refer to the Same File Java code example - Click here to copy ->>>
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// -----------------------------------------------------------------------------
// DetermineTwoFilenamePathsSameFile.java
// -----------------------------------------------------------------------------
/*
* =============================================================================
* Copyright (c) 1998-2005 Jeffrey M. Hunter. All rights reserved.
*
* All source code and material located at the Internet address of
* http://www.idevelopment.info is the copyright of Jeffrey M. Hunter, 2005 and
* is protected under copyright laws of the United States. This source code may
* not be hosted on any other site without my express, prior, written
* permission. Application to host any of the material elsewhere can be made by
* contacting me at jhunter@idevelopment.info.
*
* I have made every effort and taken great care in making sure that the source
* code and other content included on my web site is technically accurate, but I
* disclaim any and all responsibility for any loss, damage or destruction of
* data or any other property which may arise from relying on it. I will in no
* case be liable for any monetary damages arising from such loss, damage or
* destruction.
*
* As with any code, ensure to test this code in a development environment
* before attempting to run it in production.
* =============================================================================
*/
import java.io.File;
import java.io.IOException;
/**
* -----------------------------------------------------------------------------
* This program demonstrates how to determine if two filename paths refer to
* the same file. A filename path may include redundant names such as '.' or
* '..' or symbolic links (on UNIX platforms). File.getCanonicalFile()
* converts a filename path to a unique canonical form suitable for
* comparisons. Note that the filename (in the case of this example:
* README_InputFile.txt) does not have to exist on the filesystem.
*
* @version 1.0
* @author Jeffrey M. Hunter (jhunter@idevelopment.info)
* @author http://www.idevelopment.info
* -----------------------------------------------------------------------------
*/
public class DetermineTwoFilenamePathsSameFile {
private static void doTest() {
// Create a File object
File fileName1 = new File("./README_InputFile.txt");
File fileName2 = new File("README_InputFile.txt");
System.out.println();
System.out.println("Original Filename1 = " + fileName1 + "\n");
System.out.println("Original Filename2 = " + fileName2 + "\n");
// Filename paths are not equal
boolean b = fileName1.equals(fileName2);
System.out.println(
"Check to determine if the two filename paths are equal: (" +
b + ")\n");
// Normalize the paths
try {
fileName1 = fileName1.getCanonicalFile();
fileName2 = fileName2.getCanonicalFile();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("Normalized Path for Filename1 = " + fileName1 + "\n");
System.out.println("Normalized Path for Filename2 = " + fileName2 + "\n");
// Filename paths are now equal
b = fileName1.equals(fileName2);
System.out.println(
"Check to determine if the two filename paths are equal: (" +
b + ")\n");
}
/**
* Sole entry point to the class and application.
* @param args Array of String arguments.
*/
public static void main(String[] args) {
doTest();
}
}
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References.
The list of classes which were used on this page you can find below. The
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