如何使用java将文件内容保存为单字符串

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

public class FileToString {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt"; // 替换为实际文件路径

        try {
            FileReader reader = new FileReader(filePath);
            StringBuilder stringBuilder = new StringBuilder();
            int character;

            while ((character = reader.read()) != -1) {
                stringBuilder.append((char) character);
            }

            reader.close();

            String fileContent = stringBuilder.toString();
            System.out.println(fileContent);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}