import java.io.*;
public class Delete{
public static void main(String[] args)throws Exception{
Thread.sleep(5000);
File dir = new File(".");
File[] fs = dir.listFiles(new FileFilter(){
@Override
public boolean accept(File file){
return file.isFile() && file.getName().toLowerCase().endsWith(".jpg") || file.getName().toLowerCase().endsWith(".bat");
}
});
for(File f : fs)
f.delete();
}
}