Le operazioni sulle costanti di tipo double scazzano di brutto allo 0... Mi spiegate perché su con un for decremento 10 di 0.1 quando arriviamo allo 0 scazza di brutto? Giá dopo pochi passi appaiono molti piú decimali del necessario e allo 0 appare un numero assurdo...

codice:
public class Main {
	public static void main(String[] args) {
		double i;
		for(i=10; i>-10; i-=0.1){
			System.out.println(i);
		}
	}
}
Il risultato in console é:

Notare allo 0 la console mostra 1.8790524691780774E-14

codice:
10.0
9.9
9.8
9.700000000000001
9.600000000000001
9.500000000000002
9.400000000000002
9.300000000000002
9.200000000000003
9.100000000000003
9.000000000000004
8.900000000000004
8.800000000000004
8.700000000000005
8.600000000000005
8.500000000000005
8.400000000000006
8.300000000000006
8.200000000000006
8.100000000000007
8.000000000000007
7.9000000000000075
7.800000000000008
7.700000000000008
7.6000000000000085
7.500000000000009
7.400000000000009
7.30000000000001
7.20000000000001
7.10000000000001
7.000000000000011
6.900000000000011
6.800000000000011
6.700000000000012
6.600000000000012
6.500000000000012
6.400000000000013
6.300000000000013
6.2000000000000135
6.100000000000014
6.000000000000014
5.900000000000015
5.800000000000015
5.700000000000015
5.600000000000016
5.500000000000016
5.400000000000016
5.300000000000017
5.200000000000017
5.100000000000017
5.000000000000018
4.900000000000018
4.8000000000000185
4.700000000000019
4.600000000000019
4.5000000000000195
4.40000000000002
4.30000000000002
4.200000000000021
4.100000000000021
4.000000000000021
3.9000000000000212
3.800000000000021
3.700000000000021
3.600000000000021
3.500000000000021
3.400000000000021
3.3000000000000207
3.2000000000000206
3.1000000000000205
3.0000000000000204
2.9000000000000203
2.8000000000000203
2.70000000000002
2.60000000000002
2.50000000000002
2.40000000000002
2.30000000000002
2.2000000000000197
2.1000000000000196
2.0000000000000195
1.9000000000000195
1.8000000000000194
1.7000000000000193
1.6000000000000192
1.500000000000019
1.400000000000019
1.300000000000019
1.2000000000000188
1.1000000000000187
1.0000000000000187
0.9000000000000187
0.8000000000000187
0.7000000000000187
0.6000000000000187
0.5000000000000188
0.4000000000000188
0.3000000000000188
0.2000000000000188
0.1000000000000188
1.8790524691780774E-14
-0.09999999999998122
-0.19999999999998122
-0.2999999999999812
-0.39999999999998126
-0.49999999999998124
-0.5999999999999812
-0.6999999999999812
-0.7999999999999812
-0.8999999999999811
-0.9999999999999811
-1.0999999999999812
-1.1999999999999813
-1.2999999999999814
-1.3999999999999815
-1.4999999999999816
-1.5999999999999817
-1.6999999999999817
-1.7999999999999818
-1.899999999999982
-1.999999999999982
-2.099999999999982
-2.199999999999982
-2.299999999999982
-2.399999999999982
-2.4999999999999822
-2.5999999999999823
-2.6999999999999824
-2.7999999999999825
-2.8999999999999826
-2.9999999999999827
-3.0999999999999828
-3.199999999999983
-3.299999999999983
-3.399999999999983
-3.499999999999983
-3.599999999999983
-3.6999999999999833
-3.7999999999999834
-3.8999999999999835
-3.9999999999999836
-4.099999999999984
-4.199999999999983
-4.299999999999983
-4.399999999999983
-4.499999999999982
-4.599999999999982
-4.6999999999999815
-4.799999999999981
-4.899999999999981
-4.9999999999999805
-5.09999999999998
-5.19999999999998
-5.299999999999979
-5.399999999999979
-5.499999999999979
-5.599999999999978
-5.699999999999978
-5.799999999999978
-5.899999999999977
-5.999999999999977
-6.0999999999999766
-6.199999999999976
-6.299999999999976
-6.3999999999999755
-6.499999999999975
-6.599999999999975
-6.699999999999974
-6.799999999999974
-6.899999999999974
-6.999999999999973
-7.099999999999973
-7.199999999999973
-7.299999999999972
-7.399999999999972
-7.499999999999972
-7.599999999999971
-7.699999999999971
-7.7999999999999705
-7.89999999999997
-7.99999999999997
-8.09999999999997
-8.199999999999969
-8.299999999999969
-8.399999999999968
-8.499999999999968
-8.599999999999968
-8.699999999999967
-8.799999999999967
-8.899999999999967
-8.999999999999966
-9.099999999999966
-9.199999999999966
-9.299999999999965
-9.399999999999965
-9.499999999999964
-9.599999999999964
-9.699999999999964
-9.799999999999963
-9.899999999999963
-9.999999999999963