Java Utililty Methods Path Relative Get

List of utility methods to do Path Relative Get

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Description

The list of methods to do Path Relative Get are organized into topic(s).

Method

StringgetRelativePath(File child, File directory)
get Relative Path 
String s1 = child.getAbsolutePath();
String s2 = directory.getAbsolutePath() + File.separator;
int j = 0;
for (int i = 0; i < s2.length(); i++) {
    if (s2.charAt(i) == s1.charAt(j)) {
        j++;
    } else {
        break;
...
FilegetRelativePath(File currentDir, File target)
Constructs a relative path that addresses a given file target from a current directory. 
if (currentDir.isFile()) {
    currentDir = new File(currentDir.getParent());
if (!currentDir.isAbsolute() || !target.isAbsolute()) {
    return null;
String[] dirParts = currentDir.toString().split("\\Q" + File.pathSeparator + "\\E");
String[] targetParts = target.toString().split("\\Q" + File.pathSeparator + "\\E");
...
StringgetRelativePath(File dir, File child)
Get relative path from two absolute paths. 
return dir.getAbsoluteFile().toURI().relativize(child.getAbsoluteFile().toURI()).getPath();
StringgetRelativePath(File dir, File file)
get Relative Path 
if (dir == null || file == null) {
    throw new IllegalArgumentException("dir and file arguments must not be null");
String dirname = dir.toURI().normalize().toString();
String filename = file.toURI().normalize().toString();
if (filename.length() < dirname.length() || !filename.startsWith(dirname)) {
    return null;
if (filename.length() == dirname.length()) {
    return "";
return filename.substring(dirname.length());
StringgetRelativePath(File f, File base)
get Relative Path 
String fp = f.getAbsolutePath();
String bp = base.getAbsolutePath();
if (!fp.startsWith(bp)) {
    if (f.equals(base))
        return ""; 
    throw new IllegalArgumentException(f + "=" + fp + " is not a sub-file of " + base + "=" + bp);
String rp = fp.substring(bp.length());
...
StringgetRelativePath(File file)
get Relative Path 
String curPath = new File(".").getCanonicalPath();
String targetPath = file.getCanonicalPath();
return targetPath.substring(curPath.length() + 1);
StringgetRelativePath(File file, File basedir)
get Relative Path 
if (basedir == null)
    throw new IllegalArgumentException("basedir");
if (file == null)
    throw new IllegalArgumentException("file");
String path = file.getAbsolutePath();
int p = path.indexOf(basedir.getAbsolutePath());
if (p == -1)
    return path;
...
StringgetRelativePath(File file, File baseDir)
get Relative Path 
if (isFileInDirRecursive(file, baseDir)) {
    return baseDir.toURI().relativize(file.toURI()).getPath();
} else {
    return getRelativePathRecursive(file, baseDir, "");
StringgetRelativePath(File file, File baseDirectory)
Given a file and base directory, the method returns file path relative to base directory. 
String baseDirAsString = baseDirectory.getCanonicalPath();
String filePathAsString = file.getCanonicalPath();
int dirIndex = filePathAsString.indexOf(baseDirAsString);
if (dirIndex == -1) {
    throw new IllegalArgumentException("Directory path is not part of file path. directory = "
            + baseDirAsString + " scenario path = " + filePathAsString);
return filePathAsString.substring(dirIndex + baseDirAsString.length() + 1);
...
StringgetRelativePath(File file, File directory)
get Relative Path 
String relativePath = file.getPath().substring((int) directory.getPath().length());
if (relativePath.startsWith("/") || relativePath.startsWith("\\"))
    relativePath = relativePath.substring(1);
return relativePath;