Java 中的 BigDecimal valueOf()方法
原文:https://www . geesforgeks . org/big decimal-value of-method-in-Java/
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The java.math.BigDecimal.valueOf(long val) is an inbuilt method in java that translates a long value into a BigDecimal value with a scale of zero. It allows us, the reuse of frequently used BigDecimal values and hence this “static factory method” is provided in preference to a (long) constructor.
语法:
java public static BigDecimal valueOf(long val)参数:该方法接受 Long 数据类型的单个参数值，并引用需要转换为 BigDecimal 值的值。
返回值:该方法返回一个大十进制值龙值。
下面的程序举例说明了 Java . math . bigdecimal . value of(long val)方法的工作原理:
```java // Program to demonstrate valueOf(long) method of BigDecimal
import java.math.*;
public class gfg {
public static void main(String[] args) {
// Creating a Long Object Long ln = new Long("745812345678");
// Assigning the bigdecimal value of ln to b BigDecimal b = BigDecimal.valueOf(ln);
// Displaying BigDecimal value System.out.println("The Converted BigDecimal value is: "+b); } } ```
Output:
```java The Converted BigDecimal value is: 745812345678
```
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The java.math.BigDecimal.valueOf(double val) is an inbuilt method in java that translates a double into a BigDecimal, using the double’s canonical string representation provided by the Double.toString(double) method.
语法:
```java public static BigDecimal valueOf(double val)
```
参数:该方法接受双数据类型的单个参数值，并引用需要转换为大十进制值的值。
返回值:该方法返回一个大十进制值，该值等于或近似等于双值。
下面的程序说明了 Java . math . bigdecimal . value of(double val)方法的工作: 程序 1:
```java // Program to demonstrate valueOf(double) method of BigDecimal
import java.math.*;
public class gfg {
public static void main(String[] args) {
// Creating a Double Object Double d = new Double("785.254");
/// Assigning the bigdecimal value of ln to b BigDecimal b = BigDecimal.valueOf(d);
// Displaying BigDecimal value System.out.println("The Converted BigDecimal value is: " + b); } } ```
Output:
```java The Converted BigDecimal value is: 785.254
```
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