Question

该程序假设找到该类的名称，并检查该类的第一个char是否为大写且类似于方法和常量。以下是我的代码：

public class CamelCase {
    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(new File("Input.txt"));
        PrintWriter output = new PrintWriter("Output.txt");       
        while (scanner.hasNextLine()) {
            String line = scanner.next();
            count++;
            if (line.contains("class")) {
                line = scanner.nextLine();
                if (Character.isLowerCase(line.charAt(0))) {
                    System.out.println("dd" + count);
                }
            } else if (line.contains("void")) {
                line = scanner.next();
                if (Character.isUpperCase(line.charAt(0))) {
                    System.out.println("Error at line " + count);
                }
            } else if (line.contains("final")) {
                line = scanner.next();
                if (line.contains("int") || line.contains("double")                    
               || line.contains("String")) {
                    line = scanner.next();
                    if (!(line.equals(line.toUpperCase()))) {
                        System.out.println("Needs to be uppercase");
                    }
                }
            }
        }
    }
}

有没有办法使用scanner.next();计算行号？谢谢！

Answer 1

愿这是您的解决方案：

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class solution {
    public static int count = 0; // a static variable for counting
    public static void main(String[] args) throws FileNotFoundException {
        Scanner sc = new Scanner(new File("C:\\Users\\Himel Rana\\Desktop\\test.txt"));

        while(sc.hasNextLine()) {
            count ++; // counter incrementing every time by 1
            // you have to do something here 
            // I am printing line
            System.out.println(sc.nextLine());

        }

        // result outside of your while loop
        System.out.println("Total Line: "+count); 

    }

}

使用scanner.next（）计数行;

1 个答案: