Java 中的 StrictMath multiplyExact()方法
原文:https://www . geesforgeks . org/strict math-multiplyxact-method-in-Java/
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The multiplyExact(int num1, int num2) is an inbuilt function of StrictMath class in java which is used to get the product of the given arguments. When the result overflows an int i.e. Integer.MAX_VALUE then it throws an exception. Since this function is static so there is no need to create objects. Syntax :
java public static int multiplyExact(*int num1, int num2*)参数:该方法接受两个参数:
- num1: 这是代表一个参数的整数类型
- num2: 这是代表另一个参数的整数类型
返回值:该方法返回 num1 和 num2 的乘积。 异常:当结果溢出 int 时抛出算术异常。 示例:
```java Input: num1 = 8 nm2 = 7
Output: 56
```
下面的程序说明了 Java . lang . strict math . multiplyxact()方法。
```java // Java praogram to illustrate the // Java.lang.StrictMath.multiplyExact() import java.lang.*;
class Geeks {
public static void main(String args[]) { int num1 = 10, num2 = 5, num3 = -17, num4 = -2; System.out.println("Product of " + num1 + " and " + num2 + " is " + StrictMath.multiplyExact(num1, num2));
System.out.println("Product of " + num3 + " and " + num4 + " is " + StrictMath.multiplyExact(num3, num4));
System.out.println("Product of " + num2 + " and " + num4 + " is " + StrictMath.multiplyExact(num2, num4)); } } ```
Output:
```java Product of 10 and 5 is 50 Product of -17 and -2 is 34 Product of 5 and -2 is -10
```
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The multiplyExact(long num1, int num2) is an inbuilt function of StrictMath class in java which is used to get the product of the given arguments. When the result overflows a long then it throws an exception. Since this function is static so there is no need to create objects. Syntax :
java public static long multiplyExact(*long num1, int num2*)参数:该方法接受一个两个参数:
- num1: 这是代表一个参数的长类型
- num2: 这是表示另一个参数的 int 类型
返回值:该方法返回 num1 和 num2 的乘积。 异常:当结果溢出一个 int 时抛出算术异常。 示例:
```java Input: num1 = 8727 nm2 = 2
Output: 17454
```
下面的程序说明了 Java . lang . strict math . multiplyxact()方法。
```java // Java praogram to illustrate the // Java.lang.StrictMath.multiplyExact() import java.lang.*;
class Geeks {
public static void main(String args[]) { long num1 = 2727810, num2 = 9892829; int num3 = 817, num4 = 3; System.out.println("Product of " + num1 + " and " + num2 + " is " + StrictMath.multiplyExact(num1, num2));
System.out.println("Product of " + num3 + " and " + num4 + " is " + StrictMath.multiplyExact(num3, num4));
System.out.println("Product of " + num2 + " and " + num4 + " is " + StrictMath.multiplyExact(num2, num4)); } } ```
Output:
```java Product of 2727810 and 9892829 is 26985757874490 Product of 817 and 3 is 2451 Product of 9892829 and 3 is 29678487
```
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The multiplyExact(long num1, long num2) is an inbuilt function of StrictMath class in java which is used to get the product of the given arguments. When the result overflows a long then it throws an exception. Since this function is static so there is no need to create objects . Syntax :
java public static long multiplyExact(*long num1, long num2*)参数:该方法接受一个两个参数:
- num1: 这是代表一个参数的长类型
- num2: 这是代表另一个参数的长类型
返回值:该方法返回 num1 和 num2 的乘积。 异常:当结果溢出一长段时抛出算术异常。 示例:
```java Input: num1 = 64954 nm2 = 6643
Output: 431489422
```
下面的程序说明了 Java . lang . strict math . multiplyxact()方法。
```java // Java praogram to illustrate the // Java.lang.StrictMath.multiplyExact() import java.lang.*;
class Geeks {
public static void main(String args[]) { long num1 = 772810, num2 = 22929, num3 = -81827; long num4 = -823783; System.out.println("Product of " + num1 + " and " + num2 + " is " + StrictMath.multiplyExact(num1, num2));
System.out.println("Product of " + num3 + " and " + num4 + " is " + StrictMath.multiplyExact(num3, num4));
System.out.println("Product of " + num2 + " and " + num4 + " is " + StrictMath.multiplyExact(num2, num4)); } } ```
Output:
```java Product of 772810 and 22929 is 17719760490 Product of -81827 and -823783 is 67407691541 Product of 22929 and -823783 is -18888520407
```
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