FileWriter写入文件

Question

如何使用FileWriter将文件实际写入文件，然后在记事本上打开它并查看我所写的内容？这就是我迄今为止尝试过的：

package Experimental;

import java.io.*;

public class IO {

    public static void main (String args[]) {

       File f = new File("testFile.txt");

       //Outputting into a file
       try {

          PrintWriter filePrint = new PrintWriter(
             new BufferedWriter(new FileWriter(f,true))
          );
          filePrint.println("testing, testing, printing into a file (apparently)");
       } catch (IOException e) {
          System.out.println(e.getMessage());
       }
   }
}

Answer 1

当你写完close的FileWriter后，不要忘记它。

Answer 2

您应该像这样刷新和关闭PrintWriter：

File file = new File("testFile.txt");
PrintWriter filePrint = new PrintWriter(new BufferedWriter(new FileWriter(file, true)));

try 
{
  try 
  {
    filePrint.println("testing, testing, printing into a file (apparently)");
    filePrint.flush();
  } 
  finally
  {
    filePrint.close();
  }
}
catch (IOException e) 
{
  e.printStackTrace();
}