java - 四舍五入 - 几十

Question

我现在开始使用 android 和 java，但遇到了问题。

I have a result x = 206.0548.
And y = 206, both of type double
How do I get the result is always rounded up to 210?

In other cases, assuming x = 203.5231 I wanted to round to 205.
If x = 201 to 205 round off.
If x = 198.25 round off to 200.

...谢谢

Answer 1

数学.ceil(x/5) * 5; 我认为。查找 Math.ceil 方法，因为这是最好的方法。