Definition Of Runtime Error In Java
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring logic error java developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question example of runtime error x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; define logic error it only takes a minute: Sign up What is the difference between run-time error and compiler error? [duplicate] up vote 14 down vote favorite 7 This question already has an answer here: Runtime vs Compile time 19 answers In
Compile Time Error And Runtime Error In Java
one of my prof slides on ploymorphism, I see this piece of code with a couple of comments: discountVariable = //will produce (DiscountSale)saleVariable;//run-time error discountVariable = saleVariable //will produce //compiler error As you can see, it says in the first casting statement that it'll produce run-time error and in the other one it says it'll produce compiler error. What makes these errors? and how they differ from each other? java compiler-errors share|improve this question edited Nov 16 '12 at 21:10 compile time error in java The Unfun Cat 4,25874065 asked Feb 27 '12 at 20:31 AbdullahR 1982414 marked as duplicate by assyliasjava Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed. Jan 26 at 17:52 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. 15 Come on guys. The guy is trying to learn, downvotes are unnecessary. –JohnFx Feb 27 '12 at 20:35 3 Doesn't matter if it has addressed my example or not, what really matters is that I got the answer clearly. That guy explained it in a simple way that can be easy to understand to a naive programmer like me. –AbdullahR Feb 27 '12 at 20:54 Did you read the stackoverflow.com/faq ? –user647772 Feb 27 '12 at 21:00 Thank you AbdullahR, I hoped that from my example you could comprehend the difference and extrude the information you needed for your homework without me handing you the answer you need for your homework directly. –jwddixon Feb 27 '12 at 22:52 add a comment| 10 Answers 10 active oldest votes up vote 16 down vote accepted A run time error will only occur when the code is actually running. These are the most difficult - and lead to program crashes and bugs in your code which can be hard
server API - application program interface application log eBay Compatible Application software application gateway query application application portfolio difference between compile time error and runtime error application services (run´tīm er´&r) (n.) An error that occurs during
Runtime Error Definition
the execution of a program. In contrast, compile-time errors occur while a program is being compiled.
3 Types Of Errors In Java Programming
Runtime errors indicate bugs in the program or problems that the designers had anticipated but could do nothing about. For example, running out of memorywill http://stackoverflow.com/questions/9471837/what-is-the-difference-between-run-time-error-and-compiler-error often cause a runtime error. Note that runtime errors differ from bombs or crashesin that you can often recover gracefully from a runtime error. PREVIOUSruntimeNEXTruntime version Related Links Troubleshooting Run-Time Error Messages TECH RESOURCES FROM OUR PARTNERS WEBOPEDIA WEEKLY Stay up to date on the latest developments in Internet terminology with a http://www.webopedia.com/TERM/R/runtime_error.html free weekly newsletter from Webopedia. Join to subscribe now. LATEST ARTICLES 8 Agenda Apps to Help Students Stay Organized Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More » List of Free Shorten URL Services A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More » Top 10 Tech Terms of 2015 The most popular Webopedia definitions of 2015. Read More » STUDY GUIDES Java Basics, Part 1 Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More » Java Basics, Part 2 This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More » The 7 Layers of the OSI Model The Open System Interconnec
the execution of your program. There are fewer possible run-time errors than there are compile-time errors, but the procedure for debugging them is not always clear. This page suggests a general method of debugging any run-time errors you encounter. Sections on this page (click to http://www.terryanderson.ca/debugging/run.html jump to that section): Important Points to Keep in Mind How to Debug Your Code Examples: Null Pointer Exceptions Example: Array Index Out of Bounds Exceptions Important Points to Keep in Mind Debugging run-time errors in your code can be an extremely time-consuming process. However, there are a few points that you should first keep in mind when attempting to find where the problem is in your code. Java executes code in a strict order. This fact is probably something that is taught time error to you the very first time you see Java code, but it is important to keep in mind when debugging. The only time the flow of code execution will "jump" to another place is when you instruct it to do so. Things such as using a loop, an if statement, or calling another method will change which line of code is to be executed next, rather than Java executing the next line of code by default. For example, consider the following code: 01 this.numPeople++; error in java 02 this.numRegistered++; 03 int age = this.person.getAge(); 04 if (age >= 16) 05 { this.person.setDrive(true); 06 } else 07 { this.person.setDrive(false); 08 } 09 //... The important thing to recognize here is that Java will call lines 1 through 3 in that order, but will not call line 4 directly after line 3. Rather, because line 3 calls another method, Java will call the first line of the getAge() method directly after reaching line 3 in the above code. When the getAge() method finishes, then execution will be returned to this code and line 4 will be executed. Similarly, when Java evaluates the if clause at line 4, either line 5 or line 7 will be executed next, followed by line 9. Recognizing the order in which lines of code are executed will be very valuable in debugging. A single line of code stopped the execution of your program. When a run-time error occurs, the Java compiler will tell you the last line which was executed before the program crashed. That is, the last line executed is the one line (and only line) that is responsible for causing the run-time error to occur. The line containing the error may not need changing. Although the execution of one specific line is what caused your program to stop running, this line is not necessarily incorrect. For example, say we get a null pointer exception on the following line in our code: String personName = thePerson.getName(); We may very well want to