publicclassMain{publicstaticvoidmain(String[]args){MyClassmyObject=newMyClass();myObject.amount=10.12345;TwoDecimalPlacesProcessor.process(myObject);System.out.println(myObject.amount);// 输出: 10.12System.out.println(myObject.calculateAmount());// 输出: 10.12}} 1. 2. 3. 4. 5. 6. 7. 8...
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...
1 Using double up to two decimal places 40 Trim Double to 2 decimal places 0 How to return a double with two decimal places? 4 Truncating Double to 2 decimal places? 1 Convert double to 2 decimal places 7 how to output a double to 2 decmial places in a string? 0 Formatting Do...
1 Java Decimals formatting 3 Formatting 2 decimal places in java 142 Double decimal formatting in Java 0 Java Formating a string to have a decimal place 0 Java Float value Formatting with two decimal places 2 Formatting to 2 decimal places in Java 0 Formatting Integer with a decimal...
*/String keepTwoDecimalPlaces=String.format("%.2f",doubleNum);returnkeepTwoDecimalPlaces;}}/** * 匹配是否为数字,小数点,大数字 负述适用 * @param str 可能为中文,也可能是-19162431.1254,不使用BigDecimal的话,变成-1.91624311254E7 * @return
Each test case contains a char C (+,-,*, /) and two integers A and B(0<A,B<10000).Of course, we all know that A and B are operands and C is an operator. Output For each case, print the operation result. The result should be rounded to 2 decimal places If and only if ...
TheBigDecimal.setScale()method takes two arguments. The first isscalei.e. number of places to round off. The second is the rounding mode. Different rounding modes can give different results so test them out before finalizing. Thejava.math.RoundingMode.HALF_EVENis the recommended mode in most ...
Where there are two or more variant values each indicating its own semantics, these values should be ordered by importance, with most important first, separated by underscore('_'). The variant field is case sensitive. Note: IETF BCP 47 places syntactic restrictions on variant subtags. Also ...
Where there are two or more variant values each indicating its own semantics, these values should be ordered by importance, with most important first, separated by underscore('_'). The variant field is case sensitive. Note: IETF BCP 47 places syntactic restrictions on variant subtags. Also ...
double64 bit, IEEE 7540.04.9E-324 to 1.7976931348623157e308 (15 significant decimal places) 2.booleanTypes Thebooleandata type has only two valid values:trueandfalse. These two values are calledboolean literals. We can usebooleanliterals as the following example. ...