Java中实现文件过滤

一、先写好FileFilter实现类 

public  class TXTFile implements FileFilter{

    public TXTFile (){}

    public boolean accept(File pathname) {

        return pathname.getName().endsWith(".txt");

    }

}

 

二、利用FileFilter实现类实现文件过滤

File dir= new File(路径名);

File[] files = dir.listFiles(new TXTFile ());