3、过滤文件夹

package Io;

import java.io.File;
import java.io.FileFilter;

public class TestFile04 {
    public static void main(String[] args) {
        new TestFile04().run();
    }

    public void run() {
        File f = new File("G:\BaiduYunDownload");
        File[] files = f.listFiles(new DirFilter());
        for (File file : files) {
            System.out.println(file.getName());
        }
    }

    // 文件夹过滤器
    class DirFilter implements FileFilter {

        @Override
        public boolean accept(File pathname) {
            if (pathname.isDirectory())
                return true;
            else
                return false;
        }
    }
}