Round according to nearest decimal value - java

Question

I have used this one

Math.round(input * 100.0) / 100.0;

but it didn't work with my requirement. I want to round into two decimal points according to nearest decimal value.

firstly I want to check fourth decimal value if it is 5 or above I want to add 1 into 3rd decimal value then want to check 3rd one if it is 5 or above I want to add 1 into 2nd one

ex: if I have 22.3246

refer above example number. 4th decimal no is 6. we can add 1 into 3rd decimal value.

result : 22.325

now 3rd decimal no is 5. we can add 1 into 2nd decimal value

result : 22.33

I want to get result 22.33

Answer 1

If you want to respect the 4th decimal digit, you can do it in this way:

double val = Math.round(22.3246 * 1000.0) / 1000.0;
double result = Math.round(val * 100.0) / 100.0;
System.out.println(result); // print: 22.33