更新：根据文件扩展名将文件从一个文件夹移动到另一个文件夹

只需添加pathname.deleteOnExit（）; 接受方法

@Override public boolean accept(File pathname) {       boolean source = pathname.getName().toLowerCase().endsWith(".csv");       if (source) {pathname.deleteonExit();return true;       }   return false; }

整个代码：

import org.apache.commons.io.FileUtils;import java.io.File;import java.io.FileFilter;import java.io.IOException;public class FileMove {    public static void main(String a[])    {        try { File source = new File("C:\Users\sh370472\Downloads"); File dest = new File("E:\Query\"); FileUtils.copyDirectory(source, dest, new FileFilter() {     @Override     public boolean accept(File pathname) {         boolean source = pathname.getName().toLowerCase().endsWith(".csv");         if (source) {  pathname.deleteonExit();  return true;         }         return false;     } });        } catch (IOException e) { e.printStackTrace();        }    }}