// app3_14,由鍵盤(pán)輸入整數(shù)
import java.io.*;
public class app3_14
{
   public static void main(String args[]) throws IOException
   {
      int num;
      String str;
      BufferedReader buf;
      
      buf=new BufferedReader(new InputStreamReader(System.in));
      
      System.out.print("Input an integer:");
      str=buf.readLine();        // 將輸入的文字指定給字符串變量str存放