取得檔名不要延伸檔名

import java.io.File;
public class GetFilenameWithoutExtension{

public static String getFileNameWithoutExtension() {
  String fileName="C:\\anu\\My\\Hello.txt";
  File file = new File(fileName);

  int index = file.getName().lastIndexOf('.');
      if (index>0&& index <= file.getName().length() - 2 ) {
      System.out.println("Filename without Extension: "+file.getName().substring(0, index));
      }
    return "";
    }
public static void main(String []args){
GetFilenameWithoutExtension example=new GetFilenameWithoutExtension();
example.getFileNameWithoutExtension();
}
}