New to Java

I am writing a program for class project and I am incrementing a variable of type double by 0.1 in a loop. My expected result should look something like 0.1, 0.2, 0.3.....100.1, 100.2... and so on................. but instead this is what I am getting --

0.0
0.1
0.2
0.30000000000000004
0.4
0.5
0.6
0.7
0.7999999999999999
0.8999999999999999
0.9999999999999999
1.0999999999999999
1.2
1.3
1.4000000000000001
1.5000000000000002
1.6000000000000003
1.7000000000000004
1.8000000000000005
1.9000000000000006
2.0000000000000004


Why is the result so odd?? Furthermore, if I change the variable type to float, the result is similar, but different

0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.70000005
0.8000001
0.9000001
1.0000001

Why is it happening and what can be a good solution to the issue??