ceil、floor、round

shujie_lin

于 2019-10-24 11:55:25 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/shujie_lin/article/details/102720363

public static void main(String [] args){

    double a = 11.1;
    double b = 11.56;
    double c = - 11.1;
    double d = -11.56;

    System.out.println(Math.round(a));     //11
    System.out.println(Math.round(b));     //12
    System.out.println(Math.round(c));     //-11
    System.out.println(Math.round(d));     //-12
    System.out.println("=======================================");

    System.out.println(Math.floor(a));    //11.0
    System.out.println(Math.floor(b));    //11.0
    System.out.println(Math.floor(c));    //-12.0
    System.out.println(Math.floor(d));    //-12.0
    System.out.println("=======================================");

    System.out.println(Math.ceil(a));     //12.0
    System.out.println(Math.ceil(b));     //12.0
    System.out.println(Math.ceil(c));     //-11.0
    System.out.println(Math.ceil(d));     //-11.0
    System.out.println("=======================================");
}