Java 中的 BigDecimal shortValueExact()方法
原文:https://www . geesforgeks . org/big decimal-short value exact-method-in-Java/
java . math . BigDecimal . short value exact()是 Java 中的一个内置方法，它将这个 big decimal 转换成一个短整型，检查丢失的信息。如果这个大十进制有一个非零的小数部分，或者超出了短结果的可能范围，那么抛出一个算术异常。
语法:
public short shortValueExact()
参数:该方法不接受任何参数。
返回值:该方法返回 BigDecimal 对象的短值。
以下程序说明了上述方法: 程序 1:
// Program to demonstrate shortValueExact() method of BigDecimal
import java.math.*;
public class gfg {
public static void main(String[] args)
{
BigDecimal b1 = new BigDecimal("457");
BigDecimal b2 = new BigDecimal("4785");
// Assigning the short value of BigDecimal objects b1 and b2
// to short s1, s2 respectively
short s1 = b1.shortValueExact();
short s2 = b2.shortValueExact();
// Printing s1, s2 values
System.out.println("Exact short value of " + b1 + " is " + s1);
System.out.println("Exact short value of " + b2 + " is " + s2);
}
}
Output:
Exact short value of 457 is 457
Exact short value of 4785 is 4785
程序 2:
// Program to demonstrate shortValueExact() method of BigDecimal
import java.math.*;
public class gfg {
public static void main(String[] args)
{
BigDecimal b1 = new BigDecimal("127");
BigDecimal b2 = new BigDecimal("1455");
// assign the short value of BigDecimal objects b1 and b2
// to short s1, s2 respectively
short s1 = b1.shortValueExact();
short s2 = b2.shortValueExact();
// print s1, s2 values
System.out.println("Exact short value of " + b1 + " is " + s1);
System.out.println("Exact short value of " + b2 + " is " + s2);
}
}
Output:
Exact short value of 127 is 127
Exact short value of 1455 is 1455
参考:https://docs . Oracle . com/javase/7/docs/API/Java/math/bigdecimal . html # shortValueExact()
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