Java ArithmeticException explanation with examples:
The ArithmeticException is an exception that is thrown by an arithmetic condition. For example, if we are trying to divide a number by zero, it will throw an ArithmeticException.
In this post, I will show you how ArithmeticException works with examples.
ArithmeticException class:
The full package of ArithmeticException is java.lang.ArithmeticException. Its parent class is java.lang.RuntimeException and the parent class of RuntimeException is java.lang.Exception.
As you can see that it is a RuntimeException. So, the compiler will not show any error.
Constructors of ArithmeticException:
Following are the constructors of ArithmeticException:
ArithmeticException()
ArithmeticException(String s)The first one will create one object of ArithmeticException without any detailed message and the second one will create one ArithmeticException object with a detailed message.
Example: Dividing by zero:
This is a common cause of ArithmeticException. If you try to divide a number by zero, it will throw an ArithmeticException.
For example:
public class Main {
public static void main(String[] args) {
System.out.println(10/0);
}
}As this is a RuntimeException, the compiler will not show any error and we can run the program. It will throw the following error:
Exception in thread "main" java.lang.ArithmeticException: / by zero
at com.company.Main.main(Main.java:5)How to handle ArithmeticException:
We can use a try-catch block to handle ArithmeticException:
public class Main {
public static void main(String[] args) {
try {
System.out.println(10 / 0);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException occurred: " + e.getMessage());
}
}
}In the catch block, we can log this exception or we can add a meaningful message. In this example, I have added a message with the return value of getMessage(). The getMessage() method returns the detailed message string of the exception.
It will give the below result:
