获取某一路径下指定后缀名的文件

package file;

import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.Pattern;

class DirFilter implements FilenameFilter {//文件过滤器
private Pattern p;
public DirFilter(String regex) {
p = Pattern.compile(regex);
}
@Override
public boolean accept(File dir, String name) {
// TODO Auto-generated method stub
return p.matcher(name).matches();
}
}

public class FileDemo{

public static void main(String[] args) {
// TODO Auto-generated method stub
File file = new File("E:/Intern Record/2012-7");
String str[] = file.list(new DirFilter(".*(.pdf)$"));//正则
System.out.println(str.length);
for(String d:str) {
System.out.println(d);
}
}

}