How to assign int number to double after decimal

Question

Assume we have int x = 4 and I want to assign x as a digit after the decimal in the following double number:

double value = 2.x;

so the value should be 2.4

How can I do that in Java?

Answer 1

一个简单的方程式应该有所帮助

double value = 2 + x / 10.0;