近期用到四舍五入想到以前整理了一点，就顺便重新整理好经常见到的一些四舍五入，后续遇到常用也会直接在这篇文章更新。。。
public class Demo{
public static void main(String args[]){
System.out.println(Math.sqrt(16)); //4.0
System.out.println(Math.cbrt(8)); //2.0
System.out.println(Math.pow(3,2)); //9.0
System.out.println(Math.max(2.3,4.5));//4.5
System.out.println(Math.min(2.3,4.5));//2.3
System.out.println(Math.abs(-10.4)); //10.4
System.out.println(Math.abs(10.1)); //10.1
System.out.println(Math.ceil(-10.1)); //-10.0
System.out.println(Math.ceil(10.7)); //11.0
System.out.println(Math.ceil(-0.7)); //-0.0
System.out.println(Math.ceil(0.0)); //0.0
System.out.println(Math.ceil(-0.0)); //-0.0
System.out.println(Math.ceil(-1.7)); //-1.0
System.out.println(Math.floor(-10.1)); //-11.0
System.out.println(Math.floor(10.7)); //10.0
System.out.println(Math.floor(-0.7)); //-1.0
System.out.println(Math.floor(0.0)); //0.0
System.out.println(Math.floor(-0.0)); //-0.0
System.out.println(Math.random()); //小于1大于0的double类型的数
System.out.println(Math.random()*2);//大于0小于1的double类型的数
System.out.println(Math.random()*2+1);//大于1小于2的double类型的数
System.out.println(Math.rint(10.1)); //10.0
System.out.println(Math.rint(10.7)); //11.0
System.out.println(Math.rint(11.5)); //12.0
System.out.println(Math.rint(10.5)); //10.0
System.out.println(Math.rint(10.51)); //11.0
System.out.println(Math.rint(-10.5)); //-10.0
System.out.println(Math.rint(-11.5)); //-12.0
System.out.println(Math.rint(-10.51)); //-11.0
System.out.println(Math.rint(-10.6)); //-11.0
System.out.println(Math.rint(-10.2)); //-10.0
System.out.println(Math.round(10.1)); //10
System.out.println(Math.round(10.7)); //11
System.out.println(Math.round(10.5)); //11
System.out.println(Math.round(10.51)); //11
System.out.println(Math.round(-10.5)); //-10
System.out.println(Math.round(-10.51)); //-11
System.out.println(Math.round(-10.6)); //-11
System.out.println(Math.round(-10.2)); //-10
}
}
总结
以上所述是小编给大家介绍的Java中Math类常用方法代码详解，希望对大家有所帮助，如果大家有任何疑问请给我留
言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！
