如何将我的数字四舍五入output += Math.pow(baseUno, powernumber)+ " ";到最接近的整数？
他们总是给我一个output，例如1.0 或 2.0。您如何将这些四舍五入，以便它们简单地生成1 和 2？
import javax.swing.*;
import java.text.*;
import java.util.*;
public class level7Module1
{
public static void main(String[] args)
{
String base, power, output = " "; //user inputs, and the output variable
double baseUno, powerUno, basenum = 0, powernum = 0; //user inputs parsed so they can be used in mathematical equations
DecimalFormat noDigits = new DecimalFormat("0");
// oneDigit.format(variablename)
base = JOptionPane.showInputDialog(null,"Enter your prefered base, a number between 1 and 14: \nPress 'q' to quit."); //User input
if (base.equals("q"))
{
JOptionPane.showMessageDialog(null,"Goodbye!");
System.exit(0); //quits
}
baseUno = Integer.parseInt(base);
// basenum = noDigits.format(baseUno);
if (baseUno <= 0)
{
JOptionPane.showMessageDialog(null,"Really? Why would you try to trick me? ):");
System.exit(0);
}
if (baseUno > 14)
{
JOptionPane.showMessageDialog(null,"That wasn't cool. Take some time to think about this \nand\nthen\ntry\nagain.\n\n\n\n\n\n\n\nJerk.");
System.exit(0);
}
//I chose 0 and 14 because on my monitor the combination of 14 and 14 filled up the entire screen, so I limited to things
//that would fit on my monitor :)
power = JOptionPane.showInputDialog(null, "How many numbers of this base would you like? Between 1 and 14 again, please.\nPress 'q' to quit.");
if (power.equals("q"))
{
JOptionPane.showMessageDialog(null,"Goodbye!");
System.exit(0);
}
powerUno = Integer.parseInt(power);
// powernum = noDigits.format(powerUno);
if (powerUno <= 0)
{
JOptionPane.showMessageDialog(null,"Really? Why would you try to trick me? ):");
System.exit(0);
}
if (powerUno > 14)
{
JOptionPane.showMessageDialog(null,"That wasn't cool. Take some time to think about this \nand\nthen\ntry\nagain.\n\n\n\n\n\n\n\nJerk.");
System.exit(0);
}
for (int powernumber=0; powernumber!=powerUno; powernumber++) //Set the number of powers done to 0, then until it's "powernum" input, it keeps going.
{
output += Math.pow(baseUno, powernumber)+ " "; //Output is the basenum to the power of powernum plus a space, then repeats condition above.
}
JOptionPane.showMessageDialog(null,"Your numbers are: " + output); //Giving the users their outputs
}
}