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php language This worked well in this simple case, but this is far from the only such potential problem. If you were to check for every possible error condition in each line of code, you would find your code becoming bloated with more error checking than actual code. Moreover you then have to start checking for errors in the error conditions. In older languages like C, Basic and Fortran you sooner or later you find yourself resorting to goto or longjmp or other such ingredients in the recipe for illegible Spaghetti CodeThe goal of exception handling is to be able to define the regular flow of the program in part of the code without worrying about all the special cases. Then, in a separate block of code, you cover the exceptional cases.
php language This produces more legible code since you don't need to interrupt the flow of the algorithm to check and respond to every possible strange condition. The runtime environment is responsible for moving from the regular program flow to the exception handlers when an exceptional condition arises.In practice what you do is write blocks of code that may generate exceptions inside try-catch blocks. You try the statements that generate the exceptions. Within your try block you are free to act as if nothing has or can go wrong.
php language Then, within one or more catch blocks, you write the program logic that deals with all the special cases.Here's an example of exception handling in Java using the Hello World program above:// This is the Hello program in Java class ExceptionalHello { public static void main (String args[]) { /* Now let's say hello */ try { System.out.println("Hello " + args[0]); } catch (Exception e) { System.out.
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