# Division by ZERO

Thomas Markl

Ranch Hand

Posts: 192

posted 13 years ago

When I divide 10 / 0 then Exception „Divided by zero“ should appear as in example 1.

Why doesn’t it apper in Example 2 with „double d“?

And why POSITIVE Infinity?

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

java.lang.ArithmeticException: / by zero

at Positive_infinity_test.main(Positive_infinity_test.java:5)

Exception in thread "main"

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

10.0 / -0) = Infinity

Positive infinityInfinity

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

10.0 / -0) = Infinity

Positive infinityInfinity

Why doesn’t it apper in Example 2 with „double d“?

And why POSITIVE Infinity?

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

java.lang.ArithmeticException: / by zero

at Positive_infinity_test.main(Positive_infinity_test.java:5)

Exception in thread "main"

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

10.0 / -0) = Infinity

Positive infinityInfinity

C:\Java\EigeneJavaProgramme>java Positive_infinity_test

10.0 / -0) = Infinity

Positive infinityInfinity

Bosun Bello

Ranch Hand

Posts: 1510

Ilja Preuss

author

Sheriff

Sheriff

Posts: 14112

posted 13 years ago

Because it is usefull for the following reason:

lim (x -> +0) (10/x) = positive infinity

That is, the nearer x gets to zero, the bigger gets 10/x
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus

Originally posted by Thomas Markl:

When I divide 10 / 0 then Exception „Divided by zero“ should appear as in example 1.

Why doesn’t it apper in Example 2 with „double d“?

And why POSITIVE Infinity?

Because it is usefull for the following reason:

lim (x -> +0) (10/x) = positive infinity

That is, the nearer x gets to zero, the bigger gets 10/x

Dirk Schreckmann

Sheriff

Posts: 7023