我的程序不会要求用户输入文件中出现的内容

Question

所以我正在制作一个程序，它从我的文件中读取并允许用户输入一个词以查看该词的出现。它运行正常，但不要求用户输入单词，我一直在想为什么，这是代码：

import java.util.*;
import java.io.*;
public class WordOccurence {
    public static void main(String[] args) throws IOException {
        int wordCount=0;
        int word =0;
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter file name");
        String fileName=scan.next().trim();
        System.out.println("Enter the word you want to scan: ");
        Scanner scr = new Scanner(new File(fileName));
        // your code goes here ...
        while(scr.hasNextInt()){
            Scanner word2 = new Scanner(System.in);
            String word1 = word2.next();
            if (word1.equals(word2)){
                word++;
            }
        }
        System.out.println("Total words = " + word);
    }
}

Answer 1

您的代码中几乎没有错误，这个版本应该可以按您的预期工作（我插入了评论试图解释如何修复）

public static void main(String[] args) throws IOException {
{
    int word =0;
    Scanner scan=new Scanner(System.in);
    System.out.println("Enter file name");
    String fileName=scan.next().trim();
    System.out.println("Enter the word you want to scan: ");
    //You have to insert this line in order to ask the user to input the word to find
    String wordTofind=scan.next().trim();
    Scanner scr = new Scanner(new File(fileName));
    // You should fix also here: scan the file and look if the word is present
    while(scr.hasNext()){
        String word1 = scr.next();
        if (word1.equals(wordTofind)){
            word++;
        }
    }
    System.out.println("Total words = " + word);
    }
}

别忘了关闭扫描仪：

scan.close();
scr.close();

Answer 2

如果你想让它询问用户，比如在弹出框中，你可以这样做：

String input = JOptionPane.showInputDialog("Your message");

编辑：您不需要扫描仪，除非您迭代输入。

我的程序不会要求用户输入文件中出现的内容

My program won't ask the user for an input for an occurrence in a file

java

string

java.util.scanner

find-occurrences