在Java中设置一个大十进制值的小数位
我们有以下BigDecimal值-
BigDecimal val1 = new BigDecimal("37578975587.876876989");我们将小数位设置为-
int decPlaces1 = 3;
现在，我们将使用ROUND_DOWN字段将舍入模式设置为朝零舍入-
//ROUND_DOWN-
val1 = val1.setScale(decPlaces1, BigDecimal.ROUND_DOWN);
String str1 = val1.toString();
System.out.println("Result = "+str1);要在Java中设置BigDecimal值的小数位，请尝试以下代码-
示例
import java.math.BigDecimal;
public class Demo {
public static void main(String[] argv) throws Exception {
int decPlaces1 = 3;
int decPlaces2 = 5;
BigDecimal val1 = new BigDecimal("37578975587.876876989");
BigDecimal val2 = new BigDecimal("62567875598.976876569");
System.out.println("Value 1 : "+val1);
System.out.println("Value 2 : "+val2);
//ROUND_DOWN-
val1 = val1.setScale(decPlaces1, BigDecimal.ROUND_DOWN);
String str1 = val1.toString();
System.out.println("Result = "+str1);
//ROUND_UP-
val2 = val2.setScale(decPlaces2, BigDecimal.ROUND_UP);
String str2 = val2.toString();
System.out.println("Result = "+str2);
}
}输出结果
Value 1 : 37578975587.876876989 Value 2 : 62567875598.976876569 Result = 37578975587.876 Result = 62567875598.97688