superchaoran的个人空间

import java.util.Scanner;
class roundOffTest
{
  public static void main(String[] args)
  {

    Double output;
    Scanner scan = new Scanner(System.in);
     System.out.println("Please input a double: ");
    Double input = scan.nextDouble();
    if(((input*1000)%10)>=5)
      output = Math.ceil(input*100)/100;
      else
      output = Math.rint(input*100)/100;
      System.out.println("The final 2 decimal double is: "+output);
 
  }
}

import java.util.Scanner;
import java.text.DecimalFormat;
class roundoff2
{
  public static void main(String[] args)
  {
    Scanner scan = new Scanner(System.in);
    double input = scan.nextDouble();
    DecimalFormat df = new DecimalFormat("0.00");
    String output = df.format(input);//This is a String
    System.out.println(output);
  }
}