keyinvalue.java

这是有关电子商务的学习笔记以及java的源代码,非常精彩

import java.io.*;
public class keyinvalue
  {
  public static void main(String args[]) throws Exception
    {
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    String s;
    System.out.print("Key in a numeral string:");
    System.out.flush();
    s=br.readLine();

    int i=Integer.parseInt(s);
    double d=Double.parseDouble(s);

    System.out.println("Key in value * 2 (Integer)= "+i*2);
    System.out.println("Key in value * 2 (Double)= "+d*2.0);
    }
  }