System.out.println(Math.round(0.60)); System.out.println(Math.round(0.40)); System.out.println(Math.round(5)); System.out.println(Math.round(5.1)); System.out.println(Math.round(-5.1)); System.out.println(Math.round(-5.9));
public static void main(String[] args) { // TODO Auto-generated method stub //Math.round():四舍五入运算 System.out.println( "1.小数点后第一位 =5" ); System.out.println( "正数:Math.round(11.5) = " + Math.round( 11.5 )); System.out.println( "负数:Math.round(-11.5) = " + ...
doublenumber=3.1415926;doubleroundedNumber=Math.round(number*100.0)/100.0;System.out.println(roundedNumber); 1. 2. 3. 在上述代码中,我们首先将要保留两位小数的数字乘以100,这样就将小数点向右移动了两位。然后,利用Math.round方法对乘以100后的结果进行取整操作。最后,将取整后的结果除以100,实现将小数点向左...
Round Scalb Signum Sin Sinh Sqrt SubtractExact Tan Tanh ToDegrees ToIntExact ToRadians Ulp NegativeArraySizeException NoClassDefFoundError NoSuchFieldError NoSuchFieldException NoSuchMethodError NoSuchMethodException NullPointerException Number NumberFormatException ...
public static long round(double num);四舍六入五成双(看下面代码的注释),round有大约,完整的意思 3. 四种方法一起通过代码演示一遍 public class MathMethod { public static void main(String[] args) { //abs方法,取绝对值 System.out.println(Math.abs(3.14)); //3.14 ...
public class RoundTest { public static void main(String[] args) { // TODO Auto-generated method stub // Math.round():Java中的四舍五入函数 System.out.println("Case1:小数点后第一位 = 5"); System.out.println("正数:Math.round(11.5) = " + Math.round(11.5)); ...
publicclassMathTest { publicstaticvoidmain(String[] args) { // TODO Auto-generated method stub //Math.round():四舍五入运算 System.out.println("1.小数点后第一位 =5"); System.out.println("正数:Math.round(11.5) = "+ Math.round(11.5)); ...
表中的结果栏可以通过以下方式获得:使用指定的值创建一个BigDecimal数字,形成一个具有适当设置(precision设置为1,roundingMode设置为相关的舍入模式)的MathContext对象,并使用适当的MathContext对此数字调用round。下面是一个汇总表,该表显示了在所有舍入模式下这些舍入操作的结果。
Round(Double) Returns the closest long to the argument, with ties rounding to positive infinity. Round(Single) Returns the closest int to the argument, with ties rounding to positive infinity.Round(Double) Returns the closest long to the argument, with ties rounding to positive infinity. [...
6. Math.round() Method Another way of rounding numbers is to use theMath.Round()Method. In this case, we can controlnnumber of decimal places by multiplying and dividing by10^n: public static double roundAvoid(double value, int places) { ...