Java Math.multiplyExact() Method with Examples

by Online Tutorials Library July 22, 2022

Java Math.multiplyExact() method

The java.lang.Math.mutliplyExact() returns the product of the arguments. It will throw an exception if the result overflows either int or long.

Syntax

  public static int multiplyExact(int a, int b)   public static long multiplyExact(long a, long b)  public static long multiplyExact(long a, int b)  

Parameter

Return

If one of the arguments is Integer.MAX_VALUE or Integer.MIN_VALUE or Long.MAX_VALUE or Long.MIN_VALUE, it will throw an ArithmeticException.

Example 1

  public class MultiplyExactExample1  {      public static void main(String[] args)       {          int a = 739;          int b = 5;          // Input two values, Output multiplication of a and b          System.out.println(Math.multiplyExact(a, b));      }  }  

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Output:

Example 2

  public class MultiplyExactExample2  {      public static void main(String[] args)       {          long a = Long.MAX_VALUE;          long b = 462;          // Input long overflow, Output AirthmeticException          System.out.println(Math.multiplyExact(a, b));      }  }  

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Output:

Exception in thread "main" java.lang.ArithmeticException: long overflow  at java.lang.Math.multiplyExact(Math.java:892)  at multiplyExactExample2.main(multiplyExactExample2.java:8)

Example 3

  public class MultiplyExactExample3  {      public static void main(String[] args)       {          int x = Integer.MIN_VALUE;          int y= 33;          // return Airthmetic Exception           System.out.println(Math.multiplyExact(x, y));      }  }  

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Output:

Exception in thread "main" java.lang.ArithmeticException: integer overflow  at java.lang.Math.multiplyExact(Math.java:867)  at MultiplyExactExample3.main(MultiplyExactExample3.java:8)

Next TopicJava Math

Java Math.multiplyExact() Method with Examples

Java Math.multiplyExact() method

Syntax

Parameter

Return

Example 1

Example 2

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