Removing decimals from double

Hello!

I've only just started learning Java, and I've just progressed from programs like "HelloWorld" and such :(happy):

I've written an extremely simple and basic program, that measures time dilation when a fictive space vessle travels close to the speed of light... :D:

It's working as I've intended, however, my ambition is to remove all decimals from the answer. For example if I get answer of 15.93848929393, I've used

Math.floor to round the double off, however now it will be displayed as 15.0 and I would like to be rid of the decimal completely.

Is there anybody who can give me a suggestion as to how to remove the decimal?

Please bear with me, I'm a complete noob at this, and there's a lot I still don't know and understand... :(sweat):

Here is the code:

import javax.swing.*;

import java.lang.Math;

public class TimeDilation {

public void dilation(){

double speedoflight, result, round;

speedoflight = Double.parseDouble(JOptionPane.showInputDialog("En ter lightspeed"));

result = 100*(Math.sqrt(1-(Math.pow(speedoflight, 2))));

round = Math.floor(result);

JOptionPane.showMessageDialog(null, "If you travel for 100 years on Earth " + round + " years will pass on The Magellan");

}

}

Thanks in advance for any replies!! :D:

Re: Removing decimals from double

Re: Removing decimals from double

Quote:

rid of the decimal completely.

Cast the double to an int