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Get files from a directory in the file system using Java

This simple Java method can be used to get an array of files from your operating system's file system.

This page is filed under keyword(s): java.

If provided, any files matching any one of the strings found in the array of string ignore[] will be ignored; this can be useful if you want pick up all files except, for example, those marked with the word "temp" or obsolete files marked with ".old" extension.

/**
 * Get the all files in a directory, ignoring files with file names containing particular strings.
 *
 * @param folderPath : Full path of directory in question, eg. "C:\\docs\\myFiles\\"
 * @param ignore[] : An array of strings containing words with which to ignore files, eg. { "temp","ignore",".old" }
 * @return File[]
 * @author C. Peter Chen of http://dev-notes.com
 * @date 20080610
 */
private static File[] getFiles(String folderPath, String ignore[]) {
	File f = new File(folderPath);
	File[] fList = f.listFiles();
	List retFl = new ArrayList();
	if (fList != null && fList.length > 0) {
		for (File file : fList) {
			boolean pass = true;
			for (String ig : ignore) {
				if (file.getName().indexOf(ig) >= 0) {
					pass = false;
				}
			}
			if (pass) { // Only get the file if none of the ignore strings are present
				retFl.add(file);
			}
		}
	}
	return retFl.toArray(new File[0]);
}

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This page is filed under keyword(s): java.
Author: C. Peter Chen
Last updated: 10 Jun 2008

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