Java Utililty Methods ClassPath

List of utility methods to do ClassPath

  1. HOME
  2. Java
  3. C
  4. ClassPath

Description

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

Method

FilegetFileFromClasspathResource(String resource)
get File From Classpath Resource 
return new File(findBasePathFromClasspathResource(resource), resource);
StringgetFilePathFromClasspath(String filename)
Gets the absolute path of a file with given filename, searching classpath. 
java.net.URL url = ClassLoader.getSystemClassLoader().getResource(filename);
if (null != url && "file".equals(url.getProtocol())) {
    return url.getPath();
return null;
StringgetFullPath(String classPath)
get Full Path 
String fileClassPath = classPath;
if (fileClassPath == null) {
    fileClassPath = "";
ClassLoader cl = Thread.currentThread().getContextClassLoader();
URL url = cl.getResource(fileClassPath);
if (url != null) {
    return url.getFile();
...
InputStreamgetInputStreamFromClasspathFile(final String fileName)
get Input Stream From Classpath File 
return new FileInputStream(getFileFromClasspath(fileName));
URLgetResourceFromClasspath(final String fileName)
get Resource From Classpath 
return Thread.currentThread().getContextClassLoader().getResource(fileName);
InputStreamgetStreamFromClassPath(String source)
get Stream From Class Path 
URL retURL = getURLFromClassPath(source);
if (retURL == null)
    return null;
return retURL.openStream();
URL[]getSystemClassPath()
get System Class Path 
return getAppClassLoader().getURLs();
URL[]getSystemClasspathEntries()
get System Classpath Entries 
String[] paths = System.getProperty("java.class.path").split(File.pathSeparator);
URL[] urls = new URL[paths.length];
for (int i = 0; i < paths.length; i++) {
    urls[i] = new File(paths[i]).toURI().toURL();
return urls;
booleanisInClassPath(String location)
Returns true if the specified location is in the JVM classpath. 
return isInClassPath(new File(location).toURI().toURL());
SetloadDirectoryFromClasspath(String path)
load Directory From Classpath 
ClassLoader cl = getContextClassLoader();
Enumeration<URL> urls = cl.getResources(path);
Set<String> children = new HashSet<>();
while (urls.hasMoreElements()) {
    URL url = urls.nextElement();
    URI uri = null;
    if ("jar".equals(url.getProtocol())) { 
        uri = new URI(url.toString().replaceAll("^jar:(.+)!/.*$", "$1")); 
...