FileWriter

 1 package file;
 2 
 3 import java.io.File;
 4 import java.io.FileWriter;
 5 import java.io.IOException;
 6 
 7 public class Demo6 {
 8     public static void main(String[] args) throws IOException {
 9         writeTest1();
10     }
11     
12     public static void writeTest1() throws IOException {
13         File file = new File("F:\\2.txt");
14         FileWriter fileWriter = new FileWriter(file);    
15 //        FileWriter fileWriter = new FileWriter(file,true);//如果追加，使用FileWriter(file,true)
16         //准备数据，写出
17         String data = "测试123数据";
18         fileWriter.write(data);
19         //关闭资源
20 //        fileWriter.flush();
21         fileWriter.close();
22         
23     }
24 }