控制显示目录的扩展名文件

package com.jzm.io;
import java.io.File;
import java.io.FilenameFilter;
class  OnlyExt implements FilenameFilter{
    private  String ext;		  
	public OnlyExt(String ext) {
	super();
	this.ext = "."+ext;
}
	@Override
	public boolean accept(File dir, String name) {				
		return name.endsWith(this.ext);
	}	
}
public class DirListOnly {
	public static void main(String[] args){	
	  String dirname = "d:/java/";
	  File f1 = new File(dirname);
	  FilenameFilter only= new OnlyExt("html");
	  String s[] = f1.list(only);	  
	  for ( int i = 0; i < s.length; i++){
		    System.out.println((s[i]));
	 }	 
	}
}

 

控制某一个目录显示特定的扩展名    

本实例只是显示*.html