Created
April 25, 2021 14:43
-
-
Save doojinkang/a38fdd6a1f70d1e537a9b6202627dff5 to your computer and use it in GitHub Desktop.
Get Classes from package name
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public static Class[] getClasses(String packageName) | |
throws ClassNotFoundException, IOException { | |
ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); | |
assert classLoader != null; | |
String path = packageName.replace('.', '/'); | |
Enumeration resources = classLoader.getResources(path); | |
List<File> dirs = new ArrayList<File>(); | |
while (resources.hasMoreElements()) { | |
URL resource = (URL) resources.nextElement(); | |
dirs.add(new File(resource.getFile())); | |
} | |
List<Class> classes = new ArrayList<Class>(); | |
for (File directory : dirs) { | |
classes.addAll(findClasses(directory, packageName)); | |
} | |
return classes.toArray(new Class[classes.size()]); | |
} | |
private static List findClasses(File directory, String packageName) throws ClassNotFoundException { | |
List classes = new ArrayList(); | |
if (!directory.exists()) { | |
return classes; | |
} | |
File[] files = directory.listFiles(); | |
for (File file : files) { | |
if (file.isDirectory()) { | |
assert !file.getName().contains("."); | |
classes.addAll(findClasses(file, packageName + "." + file.getName())); | |
} else if (file.getName().endsWith(".class")) { | |
classes.add(Class.forName(packageName + '.' + file.getName().substring(0, file.getName().length() - 6))); | |
} | |
} | |
return classes; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment