public class FileWriterTest {public static void main(String[] args) {Writer fw=null;try{//创建FileWriter对象fw =new FileWriter("D:\\DOC\\mysaying.txt");//向文件写数据fw.write("预测未来最好的方式就是创造未来!");//fw.flush();System.out.println("文件写入成功");} catch (IOException e) {e.printStackTrace();System.out.println("文件不存在");}finally {if (fw!=null){try{fw.close();} catch (IOException e) {e.printStackTrace();}}}} }