Question

java中如何将数据从键盘输入并写入文件，再读出来

Answer 1

public class FileDemo {
public static void main(String[] args) throws Exception
{
PrintWriter wi=new PrintWriter(new OutputStreamWriter(new FileOutputStream("file.txt"),"gbk"));

wi.print(new Scanner(System.in).nextLine());
wi.close();
BufferedReader re=new BufferedReader(new InputStreamReader(new FileInputStream("file.txt"),"gbk"));
String ss=null;
if((ss=re.readLine())!=null)
{
System.out.println(ss);
}
re.close();
}
}
在控制台输入你需要添加的字符，将字符写入file.txt文件中，可以看出你要添加的字符