//代码片段小解析~~
File f = new File(path);
File[] t = f.listFiles(); //这个方法来读取这个路径下的文件


import java.io.PrintWriter;
import java.io.FileReader;
import java.io.File;
class GetAllFileName{
  public static void process(String path,String to){
         File f=new File(path);
         File list[] = f.listFiles();
         StringBuffer sb=new StringBuffer();
         for(int i=0;i<list.length;i++){
                if(list[i].isFile()){
                       String temp = list[i].getName();
                       sb.append(temp);
                       sb.append('\n');
                       }
                }
         try{
               PrintWriter pw=new PrintWriter(to);
                pw.write(sb.toString());
                pw.close();
               }
         catch(Exception e){
                   e.printStackTrace();
                }
         }
  public static void main(String []args)
        String from="titles";
         String to="titles.txt";
         process(from,to);
         }
}