Java Divide 0 Error
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Java Divide By Zero Infinity
Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How does Java handle division by zero? [duplicate]
Divide By Zero Exception In C++ Program
up vote 16 down vote favorite 1 This question already has an answer here: In java, “5/0” statement doesn't fire SIGFPE signal on my Linux machine, why? 6 answers Does it simply check if divisor is different from zero every time there is division done (even in JIT-ed code)? I mean how VM manages to throw an exception without being previously killed by the OS? java divide-by-zero share|improve divide by zero exception in c# this question asked Jan 21 '14 at 21:27 mrpyo 1,01311330 marked as duplicate by Raedwald, Eric Leschinski, Kevin Panko, Lego Stormtroopr, iandotkelly Jan 22 '14 at 2:43 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. What do you mean by "previously killed"? –Oliver Charlesworth Jan 21 '14 at 21:29 One word: Zombies!! –Hot Licks Jan 21 '14 at 21:29 1 The OS won't kill the VM for a divide-by-zero. The VM will terminate if such an exception is not catched. –Stefano Sanfilippo Jan 21 '14 at 21:30 1 Division by zero is caught at hardware level and results in interrupt being called with usually leads OS to stopping the process (I'm asking how it is caught internally in VM implementation not language itself)... –mrpyo Jan 21 '14 at 21:32 2 @StefanoSanfilippo yeah the OS doesn't kill anything but the VM commits suicide ;-) –ITroubs Jan 21 '14 at 21:33 | show 7 more comments 4 Answers 4 active oldest votes up vote 30 down vote accepted In an Unix environment, in which division-by-zero is signalled
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Java Arithmeticexception
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack try catch block for divide by zero Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign try catch divide by zero up How should I throw a divide by zero exception in Java without actually dividing by zero? up vote 18 down vote favorite 2 I have an I2C device that wants two inputs: a denominator and a numerator. Both are written http://stackoverflow.com/questions/21269461/how-does-java-handle-division-by-zero to separate addresses, so no actual calculation (numerator/denominator) is done. The problem with this is that a divide by zero could occur on the I2C device, so a divide by zero error needs to be checked for. Ideally, exactly the same thing would happen if the dividing were done by the java code. At the moment, I've bodged an unused variable that does the division, but I'm worried it'll get optimized out: public void setKp(int numerator, int divisor) { int zeroCheck = numerator / http://stackoverflow.com/questions/1657887/how-should-i-throw-a-divide-by-zero-exception-in-java-without-actually-dividing divisor; //... doesn't use zeroCheck } Surely there's a better way! java exception math divide-by-zero share|improve this question asked Nov 1 '09 at 18:27 Eric 51.2k24114226 The answers suggesting checking divisor directly seem better, but I can't imagine this getting optimized away. Sure the zeroCheck might not get assigned, but the division has a potential to throw an exception, so I can't imagine it actually being optimized away. –Yishai Nov 1 '09 at 18:35 add a comment| 5 Answers 5 active oldest votes up vote 34 down vote accepted You should not throw an ArithmeticException. Since the error is in the supplied arguments, throw an IllegalArgumentException. As the documentation says: Thrown to indicate that a method has been passed an illegal or inappropriate argument. Which is exactly what is going on here. if (divisor == 0) { throw new IllegalArgumentException("Argument 'divisor' is 0"); } share|improve this answer answered Nov 1 '09 at 18:38 Joren 10.2k13548 The OP specified: "Ideally, exactly the same thing would happen if the dividing were done by the java code." –Yishai Nov 1 '09 at 18:43 I concur. My answer was only addressing how to get the same behavior as you would if you actually divided by zero, not whether you should. –uckelman Nov 1 '09 at 18:44 Yishai, yes, but felt it was appropriate to second-guess that assertion. –Joren Nov 1 '09 at 19:07 There is some debate about this view. For
problem occurs infrequently-if the "rule" is that a statement normally executes correctly, then the "exception to the rule" is that a problem occurs. Exception handling enables programmers to create applications http://www.deitel.com/articles/java_tutorials/20060408/DivideByZero/ that can resolve (or handle) exceptions. In many cases, handling an exception allows a program to continue executing as if no problem had been encountered. A more severe problem could prevent a program from https://docs.oracle.com/javase/7/docs/api/java/lang/ArithmeticException.html continuing normal execution, instead requiring it to notify the user of the problem before terminating in a controlled manner. Exception handling enables programmers to write robust and fault-tolerant programs (i.e., programs that are divide by able to deal with problems that may arise and continue executing). This tutorial demonstrates a program in which a exceptions occur. The program does not process these exceptions, which results in difficult-to-understand error messages being displayed to the user. In Part 2 of this tutorial, we demonstrate how to catch and handle these exceptions. This tutorial is intended for students and professionals who are familiar with classes and divide by zero basic inheritance concepts in Java. Download the code for this tutorial here. [Note: This tutorial is an excerpt (Section 13.3) of Chapter 13, Exception Handling, from our textbook Java How to Program, 6/e. This tutorial may refer to other chapters or sections of the book that are not included here. Permission Information: Deitel, Harvey M. and Paul J., JAVA HOW TO PROGRAM, ©2005, pp.641-643. Electronically reproduced by permission of Pearson Education, Inc., Upper Saddle River, New Jersey.] 13.3 Divide By Zero Without Exception Handling First we demonstrate what happens when errors arise in an application that does not use exception handling. Figure Fig. 13.1 prompts the user for two integers and passes them to method quotient, which calculates the quotient and returns an int result. In this example, we will see that exceptions are thrown (i.e., the exception occurs) when a method detects a problem and is unable to handle it.
Fig. 13.1 Integer division without exception handling. 1 // Fig. 13.1: DivideByZeroNoExceptionHandling.java 2 // An application that attempts to divide by zero. 3 import java.util.Scanner; 4 5 public class DivideByZeroNoExceptionHandling 6 { 7 // demonstrates throwing an exception when a divide-by-zero occurs 8 public static int quotient( int numMethod java.lang Class ArithmeticException java.lang.Object java.lang.Throwable java.lang.Exception java.lang.RuntimeException java.lang.ArithmeticException All Implemented Interfaces: Serializable public class ArithmeticException extends RuntimeException Thrown when an exceptional arithmetic condition has occurred. For example, an integer "divide by zero" throws an instance of this class. ArithmeticException objects may be constructed by the virtual machine as if suppression were disabled and/or the stack trace was not writable. Since: JDK1.0 See Also:Serialized Form Constructor Summary Constructors Constructor and Description ArithmeticException() Constructs an ArithmeticException with no detail message. ArithmeticException(Strings) Constructs an ArithmeticException with the specified detail message. Method Summary Methods inherited from classjava.lang.Throwable addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString Methods inherited from classjava.lang.Object clone, equals,