java编写一个程序,从键盘输入一串字符,从屏幕输出并将其存入a.txt文件中。

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class OutputA {
public static void main(String [] args){
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
System.out.println("string's value is : "+s);
try {
BufferedWriter bw=new BufferedWriter(new FileWriter("d:\\a.txt"));
bw.write(s);
bw.flush();
bw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}