如何用JAVA从txt文件中删除最后一行brak？

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

public static void deleteLastLine(String filePath) {
    try {
        // 读取原始文件
        FileReader fileReader = new FileReader(filePath);
        BufferedReader bufferedReader = new BufferedReader(fileReader);
        String line;
        StringBuilder content = new StringBuilder();
        
        // 逐行读取文件内容，将除最后一行外的内容保存到StringBuilder中
        while ((line = bufferedReader.readLine()) != null) {
            if (content.length() > 0) {
                content.append(System.lineSeparator());
            }
            content.append(line);
        }
        
        // 关闭读取流
        bufferedReader.close();
        
        // 将StringBuilder中的内容写回原始文件
        FileWriter fileWriter = new FileWriter(filePath);
        BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
        bufferedWriter.write(content.toString());
        
        // 关闭写入流
        bufferedWriter.close();
        
        System.out.println("成功删除最后一行break！");
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public static void main(String[] args) {
    String filePath = "path/to/your/file.txt";
    deleteLastLine(filePath);
}