1 public class Test4 {
 2     public static void main(String[] args) {
 3         try {
 4             FileReader fdFileReader=new FileReader("bitch.txt");
 5             BufferedReader bReader=new BufferedReader(fdFileReader);
 6             String my=bReader.readLine();
 7             while (my!=null) {
 8                 System.out.println(my);
 9                 my=bReader.readLine();
10             }
11             bReader.close();
12         } catch (IOException e) {
13             // TODO: handle exception
14             System.out.println("找不到指定文件");
15         }
16     }
17 }

 1 public class Test
 2 {
 3     public static void main(String[] args)
 4     {
 5         try {
 6             String content = "Thank you for your fish.";
 7 
 8             File file = new File("new.txt");
 9 
10             // create the file if doesn‘t exists
11             if (!file.exists()) {
12                 file.createNewFile();
13             }
14 
15             FileWriter fw = new FileWriter(file.getAbsoluteFile());
16             BufferedWriter bw = new BufferedWriter(fw);
17             bw.write(content);
18             bw.close();
19 
20         }
21         catch(IOException e) {
22             System.out.println("IO Problem");
23         }
24     }
25 }