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How to find whether a compile OR a runtime Error

 
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There are loads of questions with options having both "compile-time" as well as "runtime" errors. I get confused whether a piece of code will give either compile-time" or "runtime" error.

Is there any way to get to know if it will be a compile-time" or "runtime" error?

If not how to decide upon this?

I hope i'm not asking a silly question here

regards,
gitesh
 
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Hi Gitesh,

In general compile time errors means your application/.java file won't compile, so you won't be able to run it and therefore won't get any runtime errors. A compile time error usually consists of syntax errors, or importing (or lack there of) of packages and such.

ex:
String s = "wow";
s.delete(1,2); //won't compile because delete doesn't exist in String

Runtime errors are errors that can not be caught in compile time, like indexOutOfBounds, division by zero, etc. These errors typically occur because of certain end cases that are not handled.

ex:
System.out.println(args[8]); //this could throw an IndexOutOfBoundException

I hope that helps...
 
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Compile time - Syntax checks.
Run Time - Semantics Checks.
 
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First thing you can always do for the exam is that check for choices in the given answers/options, if there is a choice for 'compile-time error' then you need to hunt for its possibility in the code, else you can start following through the logic. I dont think there are any runtime errors, only runtime exceptions on exam.
 
Gitesh Ramchandani
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Thanks Noam,Kishore and Akhilesh. I will follow your advice.
 
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