Java Utililty Methods URI to Relative URI

List of utility methods to do URI to Relative URI

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Description

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

Method

URIgetRelativeURI(URI uri, URI relativeTo)
get the URI relative to the specified base 
URI relUri = relativeTo.relativize(uri);
return relUri;
URLrelativeConfig(URI uri)
relative Config 
String pwd = System.getProperty("user.dir");
String path = pwd + "/" + uri; 
URL result = new URL("file:///" + path);
return result;
URIrelativeFileToURI(File file)
Returns a URI for the given file. 
if (file.isAbsolute())
    return file.toURI();
else {
    String path = file.getPath();
    if (File.separatorChar != '/')
        path = path.replace(File.separatorChar, '/');
    return URI.create(path);
StringrelativePath(final URI baseURI, final URI pathURI)
Path relative to base. 
return baseURI.relativize(pathURI).getPath();
URIrelativeURI(String basePath, String path)
Return the relative URI of the given path with respect to the given base path. 
return new File(basePath).toURI().relativize(new File(path).toURI());
URIrelativize(URI base, URI child)
relativize 
base = base.normalize();
child = child.normalize();
String[] bParts = base.getPath().split("/");
String[] cParts = child.getPath().split("/");
if (bParts.length > 0 && !base.getPath().endsWith("/")) {
    System.arraycopy(bParts, 0, bParts, 0, bParts.length - 1);
int i = 0;
...
URIrelativize(URI base, URI child)
relativize 
base = base.normalize();
child = child.normalize();
String[] bParts = base.getPath().split("\\/");
String[] cParts = child.getPath().split("\\/");
int i = 0;
while (i < bParts.length && i < cParts.length && bParts[i].equals(cParts[i])) {
    i++;
StringBuilder sb = new StringBuilder();
for (int j = 0; j < (bParts.length - i); j++) {
    sb.append("../");
for (int j = i; j < cParts.length; j++) {
    if (j != i) {
        sb.append("/");
    sb.append(cParts[j]);
return URI.create(uriEncode(sb.toString()));
URIrelativize(URI base, URI target)
Enhanced version of URI.relativize, the target can now be in parent folder of base URI. 
if (!base.getScheme().equals(target.getScheme())) {
    return target;
StringBuilder rel = new StringBuilder();
String path = base.getPath();
String separator = "/";
StringTokenizer tokenizer = new StringTokenizer(target.getPath(), separator);
String targetPart = "";
...
Stringrelativize(URI basePath, File path)
Create path relative to base path 
return (basePath != null) ? basePath.relativize(path.toURI()).getPath() : path.getPath();
Stringrelativize(URI baseUri, File f)
relativize 
String path = f.getPath();
if (f.isAbsolute()) {
    path = baseUri.relativize(new File(path).toURI()).getPath();
return path;