java按行读取文件

可以使用Java中的BufferedReader类来逐行读取文件内容。下面是一个示例程序，演示了如何使用BufferedReader逐行读取文件内容：

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

public class ReadFileLineByLineUsingBufferedReader {
    public static void main(String\[\] args) {
        BufferedReader reader;
        try {
            reader = new BufferedReader(new FileReader("文件路径"));
            String line = reader.readLine();
            while (line != null) {
                System.out.println(line);
                line = reader.readLine();
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

另外，还可以使用Java 8中的Files类来实现按行读取文件的功能。示例如下：

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;

public class ReadFileLineByLineUsingFiles {
    public static void main(String\[\] args) {
        try {
            List<String> lines = Files.readAllLines(Paths.get("文件路径"));
            for (String line : lines) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

以上是两种常用的按行读取文件的方法。你可以根据自己的需求选择适合的方法来读取文件。
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