写文件咋写不进去

[谁学逆向工程]

写不进去，文件最后还是0个字节！

import java.io.Console;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Scanner;


public class Empty 
{
	public static void main(String[]args)
	{
		File file = new File("C:\\Users\\Administrator\\Desktop\\20.txt");
		try
		{
			PrintWriter out = new PrintWriter( file );
			out.print("ff");
		}
		catch(	 FileNotFoundException e)
		{
		}
	}
}

[ZHXDD]

out.flush()一下。

[寒江易雪_王孙]

写完后要保存或者清除缓存一下