just一句话:取最近的正数,当有两个最近的正数时,就取最大的那个!
举个例子:
public class Test {
public static void main(String[] args) {
System.out.println(Math.round(10.6));//11
System.out.println(Math.round(-10.6));//-11
System.out.println(Math.round(9.5));//10
System.out.println(Math.round(-9.5));//-9
System.out.println(Math.round(10.49));//10
System.out.println(Math.round(-10.49));//-10
}
}