面试题：请给出一段代码描述字符串写入文件

import java.io.*;
public class Test {

public static void main(String args[])
{
try
{
java.io.FileOutputStream out = new FileOutputStream("FileName.txt");
out.write("字符串写入文件".getBytes());
out.close();

}
catch(IOException ioe)
{

}
}
}