Question

我希望用户输入哪一行和哪一列以读取其中的数据

例如，如果用户输入row = 6 column = 0，它将打印出Pw1

    static String fullChessBoard[][] = {
    {"Rb1", "Kb1", "Bb1", "Qb1", "Ab1", "Bb2", "Kb2", "Rb2"},
    {"Pb1", "Pb2", "Pb3", "Pb4", "Pb5", "Pb6", "Pb7", "Pb8"},
    {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
    {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
    {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
    {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
    {"Pw1", "Pw2", "Pw3", "Pw4", "Pw5", "Pw6", "Pw7", "Pw8"},
    {"Rw1", "Kw1", "Bw1", "Qw1", "Aw1", "Bw2", "Kw2", "Rw2"},
    };

    System.out.println(Player1W + ", please make a move");
    int row = scan.nextInt();
    int column = scan.nextInt();

Answer 1

我假设您正在编写的该程序是一个命令行程序，用户将信息放入命令提示符，然后您的程序做出响应。如果不是，请告诉我，因为我的回答在该假设下起作用。

在Java中，有多种方法可以从命令行获取输入。以下链接有一些很好的例子： [https://www.geeksforgeeks.org/ways-to-read-input-from-console-in-java/][1]

这是我写的一个简单示例，它从用户输入的字符串中输出第一个重复的字母，它使用BufferedReader类集来从InputStreamReader包装的System.in对象中获取输入。我确定这听起来很复杂，但是代码可以更好地说明这一点：

import java.io.BufferedReader;
import java.io.Console;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Set;
import java.util.TreeSet;

public class FirstRecurringCharacter {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        
        BufferedReader reader = new BufferedReader(new        InputStreamReader(System.in)); 
        System.out.println("Enter your string: ");
        String toAnalyze = reader.readLine();
        returnFirstRecurring(toAnalyze);  
    }
    
    private static Character returnFirstRecurring(String toAnalyze) {
        String toSearch = toAnalyze;
            Set<Character> seenCharacters = new TreeSet<>();
            for (int i = 0; i < toSearch.length(); i++) {
                if (seenCharacters.contains(toSearch.charAt(i))) {
                    System.out.println(toSearch.charAt(i));
                    return toSearch.charAt(i);
                } else {
                    seenCharacters.add(toSearch.charAt(i));
                }
            }
            System.out.println("No repeating characters.");
            return null;
    }
    
}

.readLine（）方法在用户按下控制台上的Enter之后获得用户输入。自己尝试！

对于您的程序，您可能希望一次提示一次，以插入行索引，然后插入列索引，如果需要，可以将其输入转换为整数，然后在程序的其余部分中使用它们。我希望这会有所帮助！

Answer 2

尝试此代码

import java.util.Scanner;
public class HelloChess{
    static String fullChessBoard[][] = {
        {"Rb1", "Kb1", "Bb1", "Qb1", "Ab1", "Bb2", "Kb2", "Rb2"},
        {"Pb1", "Pb2", "Pb3", "Pb4", "Pb5", "Pb6", "Pb7", "Pb8"},
        {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
        {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
        {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
        {"   ", "   ", "   ", "   ", "   ", "   ", "   ", "   "},
        {"Pw1", "Pw2", "Pw3", "Pw4", "Pw5", "Pw6", "Pw7", "Pw8"},
        {"Rw1", "Kw1", "Bw1", "Qw1", "Aw1", "Bw2", "Kw2", "Rw2"},
        };

    public static void main(String []args){
        Scanner scan = new Scanner(System.in); 
        System.out.print("Enter Row: ");            
        int row = scan.nextInt();
        System.out.print("Enter Column: ");
        int column = scan.nextInt();
        System.out.println("Result : "+fullChessBoard[row][column]);
        scan.close();
    }
}

如何提示用户输入哪个[行] [列]

2 个答案: