What does 'illegalargumentexception in java' mean?

Example:

void exampleMethod(int value) {
    if(value < 0) {
        throw new IllegalArgumentException("Value must be positive");
    }
}

exampleMethod(-1);

Solution:

This exception is thrown to indicate that a method has been passed an illegal or inappropriate argument. Check the method's requirements and ensure you're passing appropriate values.

exampleMethod(1);