Java question

I was wondering if any of you java geeks could help me with the following:

package testproject;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
      
        doubleClass l = new doubleClass();
       
        while(true)
        {
            l.countUp();
            System.out.println(l.getNumber());
            Scanner in = new Scanner(System.in);
            // wait for <Enter> to be pressed
            in.nextLine();
        }
    }
}

package testproject;
public class doubleClass {

    private double number;
   
    public doubleClass()
    {
        number = 0;
    }
   
    public void countUp()
    {
        number += 0.01;  
    }
   
    public double getNumber()
    {
        return number;
    }
}

So basically a very simple program to test a double.
The problem is that the number fucks up at some points.
e.g. instead of printing 0.06 it prints 0.060000000000000005
Why the fuck is this and how can I get it to work normally
like in c or c++?