Display File List In a directory

public String[] getFileNames(String DirPath) {

String directoryName;
File directory;
String[] files;
directory = new File(DirPath);
if (directory.isDirectory() == false) {
if (directory.exists() == false) {
System.out.println("There is no such directory!");
return null;

} else {
System.out.println("That file is not a directory.");
return null;
}
} else {
files = directory.list();
// System.out.println("Files in directory -" + directory + "/:");
for (int i = 0; i < files.length; i++) {
//System.out.println(" " + files[i]);

}
return files;
}
}