Question

我目前正在研究一个java程序，它要求你在几个txt文件上使用几个扫描程序来返回名称的定义，以及一些与它们一起使用的数字。目前，我很难将这些数据恢复到原始程序。带有定义的.txt文件的示例如下：

    ADAMO m Italian Italian form of ADAM
    ADAN mf (no meaning found)
    ADANNA f Igbo Means "father's daughter" in Igbo.
    ADANNAYA f Igbo Means "her father's daughter" in Igbo.
    ADAOIN f Irish Modern form of TAN

我的程序目前看起来像这样：

import java.io.*; 
import java.util.Scanner;//For reading the file.

public class BabyNamesProject {

    //This program will use user input to scan several text documents for information regarding names.
    //It will give the popularity of the name in the last few decades, it's meaning, and a Drawing Panel chart with it's popularity.
    public static void main(String[] args) 
        throws FileNotFoundException {

        File f = new File("Names.txt");
        File g = new File("Meanings.txt");
        File h = new File("Names2.txt");
        Scanner nameCheck = new Scanner(f);
        Scanner meaningCheck = new Scanner(g);
        Scanner popularityCheck = new Scanner(h);
        Scanner Ask = new Scanner(System.in);
        String userName = "";
        String upperUserName = "";
        String meaning = "";

        System.out.println("Hello! This application will allow you to check how popular certain names are compared to others.");
        System.out.println(" ");
        System.out.println("Please type in your name!");
        userName = Ask.next();  
        upperUserName = userName.toUpperCase();
        if (meaningCheck.hasNext(""+ upperUserName))

        meaning = meaningCheck.next("" + upperUserName);
        System.out.println("" + meaning);
        System.out.println("" + userName +"! That's one the rarest cards in all of duel monsters!");            
    }
}

正如您可能已经注意到的那样，它还远没有完成，但我似乎无法弄清楚如何搜索.txt文件，使用用户输入的大写名称，以及如何使其返回整行。到目前为止，似乎有很多搜索引导我回车，我至少知道它们是如何工作的，而不是如何使用它。如果有人有时间解释我可以做的事情来解决这个问题，我将不胜感激！

Answer 1

该方法称为nextLine()：

    File f = new File("text.txt");
    Scanner s = new Scanner(f);
    String line = s.nextLine();

Answer 2

您可以使用BufferedReader逐行读取文本文件，并随意执行任何操作。

看看这里：http://www.mkyong.com/java/how-to-read-file-from-java-bufferedreader-example/

有没有办法返回.txt文档的整行？

2 个答案: