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public static Class[] getClasses(String pckgname)
throws ClassNotFoundException {
ArrayList<Class> classes = new ArrayList<Class>();
// Get a File object for the package
File directory = null;
try {
ClassLoader cld = Thread.currentThread().getContextClassLoader();
if (cld == null)
throw new ClassNotFoundException("Can't get class loader.");
String path = '/' + pckgname.replace('.', '/');
URL resource = cld.getResource(path);
if (resource == null)
throw new ClassNotFoundException("No resource for " + path);
directory = new File(resource.getFile());
} catch (NullPointerException x) {
throw new ClassNotFoundException(pckgname + " (" + directory
+ ") does not appear to be a valid package a");
}
if (directory.exists()) {
// Get the list of the files contained in the package
String[] files = directory.list();
for (int i = 0; i < files.length; i++) {
// we are only interested in .class files
if (files[i].endsWith(".class")) {
// removes the .class extension
classes.add(Class.forName(pckgname + '.'
+ files[i].substring(0, files[i].length() - 6)));
}
}
} else
throw new ClassNotFoundException(pckgname
+ " does not appear to be a valid package b");
Class[] classesA = new Class[classes.size()];
classes.toArray(classesA);
return classesA;
}
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import java.io.*;
public class Zhangyiwei {
public static String filename = "c:\\1.txt";
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