How to solve rounding error in Java, Python ?

What is the summation of

0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1 ?

1.0 , right?
Let's add them in java:

test.java

public class test{
    //main method
    public static void main(String[] args) {
        System.out.println(0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1);

    }
}

Output: 0.9999999999999999

In Python:

print(0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1)

Output: 0.9999999999999999

now, assume that you have 100 taka 45 paisa . Other than taking it as float or double as data type, we should take integer data type.

so don't take

double balance=100.45

Take this

int balance = 10045

This is how you can solve this issue