Question

我需要为学校制作这个课程它首先提示用户输入txt文件，然后它会询问用户一个唯一的3字母代码，然后从代码中程序将读取txt文件并返回链接到该唯一代码的信息。

这是我到目前为止所做的：

import java.util.*;
import java.io.*;
public class assignA
{
public static void main (String [ ] args) throws IOException
{
  Scanner keyboard = new Scanner (System.in);
  System.out.print("Please enter the file name");
  String filename = keyboard.nextLine ();
  File f = new File (filename);
  Scanner fin = new Scanner (f);

  while(fin.hasNextLine());
  {
     String line = fin.nextLine ();


  }

}

Answer 1

我希望这会对你有所帮助。

import java.util.*;
import java.io.*;
public class assignA
{
public static void main (String [ ] args) throws IOException
{
  Scanner keyboard = new Scanner (System.in);
  System.out.print("Please enter the file name");
  String filename = keyboard.nextLine ();
  File f = new File (filename);
  Scanner fin = new Scanner (f);

  String code = "RXP"; //You can replace it with a scanner input

  while(fin.hasNextLine());
  {
     String line = fin.nextLine();
     String[] detail = line.split("#");
     if (detail[0].equals(code)) {
         System.out.println(detail[1] + detail[2]);
         break;
     }


  }

}

从用户输入读取txt文件，然后从该输入返回结果

1 个答案: