Java Compile Time Error Definition
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta run time errors in java Discuss the workings and policies of this site About Us Learn more compile time error and runtime error in c about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack compile time errors in java Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, runtime error vs compile error c++ helping each other. Join them; it only takes a minute: Sign up Compile time vs run time errors [duplicate] up vote 3 down vote favorite 1 Possible Duplicate: Runtime vs Compile time How should I know whether a specific line of code in Java may throw a compile time or run-time error? Assuming that the specific line of
Compile Time Error In C
code anyway throws and error. java runtime compile-time share|improve this question edited May 6 '13 at 22:09 Undo♦ 18.5k157399 asked Oct 14 '12 at 12:58 uml 4503921 marked as duplicate by home, Junuxx, Denys Séguret, S.L. Barth, dSquared Oct 14 '12 at 14:35 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. 1 stackoverflow.com/questions/846103/runtime-vs-compile-time –Matt Whipple Oct 14 '12 at 13:01 add a comment| 5 Answers 5 active oldest votes up vote 11 down vote accepted In Eclipse, compile time errors will be underlined in red. A compile time error is an error that is detected by the compiler. Common causes for compile time errors include: Syntax errors such as missing semi-colon or use of a reserved keyword (such as 'class'). When you try and access a variable that is not in scope. When you declare multiple objects with the same name. If the compiler detects any errors during compilation it will f
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Logical Error Java
workings and policies of this site About Us Learn more about Stack runtime error vs compile error java Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions error of intent Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join http://stackoverflow.com/questions/12882448/compile-time-vs-run-time-errors them; it only takes a minute: Sign up What is the difference between run-time error and compiler error? [duplicate] up vote 15 down vote favorite 9 This question already has an answer here: Runtime vs Compile time 19 answers In one of my prof slides on ploymorphism, I see this piece of code with a couple of comments: discountVariable http://stackoverflow.com/questions/9471837/what-is-the-difference-between-run-time-error-and-compiler-error = //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 The Unfun Cat 4,36174165 asked Feb 27 '12 at 20:31 AbdullahR 3032514 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. 17 Come on guys. The guy is trying to learn, downvotes are unnecessary. –JohnFx Feb 27 '12 at 20:35 4 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
into three categories: Lexical: These generally occur when you include disallowed characters in your code (e.g. int #people = 10;). http://www.terryanderson.ca/debugging/compile.html Syntactical: These occur when your code is "out of order" (e.g. for (int i=0; i++; i<10)). Semantic: These occur when the meaning of your code is unclear (e.g. two variables with the same name). Note that the exact wording of these errors may vary, depending on which development environment you are using. Errors described on this page (click to time error jump to that error): Cannot return a value from a method of type void 'Class' or 'interface' expected Class should be delcared abstract; it does not define... Else without if Expected: ;, {, }, (, or ) Identifier expected / Illegal character Incompatible types / Inconvertible types (cannot cast) Method does not return a value / Missing return compile time error statement Method not found Not a statement Return type required Unreachable statement Variable already defined Variable not declared Cannot return a value from a method of type void When a method is declared as having a return type of void, it cannot contain any return statements which return a value (it can, however, contain a return statement by itself, which will simply end the execution of the method). This problem is usually caused by accidentally making a method be of type void when it shouldn't be or by accidentally including a return statement where there shouldn't be one. Example 1: Incorrect Code Example 1: Fixed Code This method has a return type of void and so it may not return any values. We change the return type of this method in order to fix the problem. 01 public void getName() 02 { return this.name; 03 } 01 public String getName() 02 { return this.name; 03 } 'Class' or 'interface' expected This error will most likely be caused when you omit the keyword class