fileprefixer.java

一个使用的搜索引擎

package ir.utilities;

import java.io.*;
import java.util.*;
import java.lang.*;

/** Prefix all files in a directory with a particular prefix.
 *
 * @author Ray Mooney
*/

public class FilePrefixer {

    /** An array of files in the directory */
    private File[] files = null;
    
    public FilePrefixer(File dirFile, FilenameFilter filter) {
	// Get the files in this directory 
	if (filter != null)
	    files = dirFile.listFiles(filter);
	else 
	    files = dirFile.listFiles();
	// Initialize the position and docType
    }

    public FilePrefixer(File dirFile) {
	this(dirFile, null);
    }

    public void prefix(String prefix) throws Exception {
	for(int i = 0; i < files.length; i++) {
	    File newFile = new File(files[i].getParent(), prefix + files[i].getName());
	    files[i].renameTo(newFile);
	}
    }

    public static void main(String[] args) throws Exception {
	String dirName = args[0];
	FilePrefixer prefixer = new FilePrefixer(new File(dirName));
	prefixer.prefix(args[1]);
    }

}