java--io

读取当前工作空间文件名：

代码：

package io;

import java.util.regex.*;
import java.io.*;
import java.util.*;

public class DirList2 {
    public static FilenameFilter filter(final String regex){
        return new FilenameFilter(){
            private Pattern pattern = Pattern.compile(regex);
            public boolean accept(File dir,String name){
                return pattern.matcher(name).matches();
            }
        };
    }
    public static void main(String[] args){
        File path = new File(".");
        String [] list;
        if(args.length ==0)
            list = path.list();
        else
            list = path.list(filter(args[0]));
        Arrays.sort(list,String.CASE_INSENSITIVE_ORDER);
        for(String Item: list)
            System.out.println(Item);
    }
}

结果：

.classpath
.project
.settings
bin
DirList2.java
src