java.lang.ArithmeticException: integer overflow in java

In this Example we are going to understand the exceptions  when we are adding the integer with max range of int.

Error Message :

Exception in thread "main" java.lang.ArithmeticException: integer overflow

       at java.base/java.lang.Math.addExact(Math.java:825)

       at MathTest.main(MathTest.java:7)

Error Description :

public class MathTest {

       public static void main(String[] args) {

              int x = 2147483647;

              int y = 32767;

              int res = Math.addExact(x, y);//java.math.addExact(int a, int b);

              System.out.println(res);

       }

}

In the above example ,the red background color line is giving the exception.

The x value is more than the int size so we are getting the Integer over flow error.

Solution:

To avoid this exception we need to capture in catch block and doing the addition using bigInteger with same int values.

import java.math.BigInteger;

public class MathTest {

       public static void main(String[] args) {

              int x = 2147483647;

              int y = 32767;

              try {

              float res = Math.addExact(x, y);//java.math.addExact(int a, int b);

              System.out.println(res);

              }catch(ArithmeticException e) {

                     BigInteger b1 = BigInteger.valueOf(x);

                     BigInteger b2 = BigInteger.valueOf(y);

                     BigInteger res1 = b1.add(b2);

                     System.out.println(res1);

              }

       }

}

                         

Output:

2147516414