publicclassDecimalChecker{publicstaticbooleanisTwoDecimalPlaces(doublenumber){returnnumber>=10&&number<100;}publicstaticvoidmain(String[]args){doublenumber1=12.34;doublenumber2=123.456;doublenumber3=1.2;System.
最后,我们来展示如何在代码中使用我们定义的注解KeepTwoDecimalPlaces来实现不需要四舍五入的取两位小数。 publicclassTest{@KeepTwoDecimalPlacesprivatedoublevalue=3.456;publicstaticvoidmain(String[]args){Testtest=newTest();doubleresult=DecimalUtil.formatDecimal(test.value);System.out.println(result);// 输出结...
Learn to round off a given floating point number to 2 decimal points in Java. As the best practice, always use the Decimal class with rounding mode set to HALF_EVEN. Learn toround off numeric values (floats and doubles) to 2 decimal places in Java. Note that we can use the given solu...
} BigDecimal方法会根据数字的具体精度位数,来判断是否需要使用科学计数法。 验证代码 publicstaticvoidmain(String[] args){BigDecimaldecimal=newBigDecimal("0.00000000000009");DecimalFormatdecimalFormatNumberOfDecimalPlaces2=(DecimalFormat) NumberFormat.getNumberInstance(Locale.CHINA); decimalFormatNumberOfDecimalPlaces2....
System.out.printf("Printing simple integer: x = %d\n", x);// this will print it upto 2 decimal placesSystem.out.printf("Formatted with precision: PI = %.2f\n", Math.PI);floatn =5.2f;// automatically appends zero to the rightmost part// of decimalSystem.out.printf("Formatted to ...
To rounddoubles tondecimal places, we can write ahelper method: private static double round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = new BigDecimal(Double.toString(value)); bd = bd.setScale(places, RoundingMode.HALF_UP); ...
The result should be rounded to 2 decimal places If and only if it is not an integer. Sample Input 4 + 1 2 –1 2 * 1 2 / 1 2 Sample Output 3 -1 2 0.50 代码语言:javascript 代码运行次数:0 运行 AI代码解释 import java.util.Scanner; public class Main { public static void main(...
The result should be rounded to 2 decimal places If and only if it is not an integer. Sample Input 4 + 1 2 - 1 2 * 1 2 / 1 2 Sample Output 3 -1 2 0.50 [java] view plain copy import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner ...
importjava.math.BigDecimal;importjava.math.RoundingMode;publicclassBigDecimalOperationsExtendedWithDecimalPlacesExample{publicstaticvoidmain(String[]args){BigDecimal num1=newBigDecimal("10.5");BigDecimal num2=newBigDecimal("5.3");// 加法 BigDecimal sum = num1.add(num2); // 使用 setScale 方法将加法结果...
We specify a new pattern withapplyPattern. This pattern adds zeros to decimal places, if they are empty. Grouping digits The,format character is used for grouping of digits. Main.java import java.text.DecimalFormat; void main() { double n = 2_125_405.30; ...