W3School TIY Editor

import java.io.FileWriter; import java.io.IOException; public class WriteToFile { public static void main(String[] args) { try { FileWriter myWriter = new FileWriter("filename.txt"); myWriter.write("Java 文件操作可能有点棘手，但也足够有趣！"); myWriter.close(); System.out.println("成功写入文件"); } catch (IOException e) { System.out.println("发生错误"); e.printStackTrace(); } } }