Java打印输出文本文件并检查第一个字符

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class FilePrinter {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt";
        
        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class FilePrinter {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt";
        
        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                
                if (!line.isEmpty()) {
                    char firstChar = line.charAt(0);
                    // 进行第一个字符的处理
                    // 例如，检查是否为特定字符、判断是否为数字等等
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}