For example, if a thrown exception object has class IllegalArgumentException, that indicates someone passed an illegal argument to a method. Sometimes you will want to indicate that a method encountered an abnormal condition that isn't represented by a class in the Throwable family of java.lang.
Actually, zero is neither a negative or a positive number. The whole idea of positive and negative is defined in terms of zero. Negative numbers are numbers that are smaller than zero, and positive numbers are numbers that are bigger than zero. Since zero isn't bigger or smaller than itself (just like you're not older than yourself, or taller than yourself), zero is neither positive nor negative.
A zero of a function is the value of the independent variable which makes the value of the function equal to zero. Sometimes called a root of the function, as well. Example: â¦ f(x) = x - 3. The value of x, which makes f(x) = 0 is x = 3, so the zero of the function is x=3. For f(x) = x2 - 9: The values, {x=3 and x=-3} both are zeros of this function. To make it more simple, when looking at a graph, the zero is where your function crosses or touches the x-axis.