FileWriter写入文件

Question

如何使用FileWriter实际写入文件，然后在记事本上打开它，看看我写了什么？这是我到目前为止所尝试的：

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

完成写作后，请不要忘记close FileWriter。

Answer 2

您应该刷新并关闭 PrintWriter，如下所示：

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();
}