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Explain try and catch exception in java?
Why use exceptions instead of return values? 1. Forces error checking 2. Cleans up your code through separating the normal case from the exceptional case. (The code isn't littered along with a lot of if-else blocks checking return values.) 3. Low overhead for non-exceptional case
Traditional programming languages set flags or return bad values such as -1 to denotes problems. Programmers frequent don't check these values.
Java throws Exception objects to denotes a problem. These cannot be ignored.try-catchtry-catch public class HelloThere {
public static void main(String[] args) { try { System.out.println("Hello " + args[0]); } catch (ArrayIndexOutOfBoundsException e) { System.out.println("Hello Whoever you are."); }
}
Use a FOR loop and give me the largest number divisible by 7 11 13 17 use the number from 1 to 10000 (or even 100000)
What is a packet within the network environment? What kind of information does it contain? A packet is the shortest unit of data transmitted over a computer network. It's a mes
EJB elements operate inside a container environment and rely heavily on the container to give security. The four key services needed for the security are: 1. Identification :
Explain the term Event Handler? An event handler is a command that calls a function while an event happens, like as the user clicking a button.
What are Trojan Horses? Trojan Horses are unlike viruses usually they are stand-alone programs. The look such as what they are not. They appear to be something harmless and int
The more complicated the underlying system, the more critical the inter communication among everyone involved in deploying and developing the software. UML is a software language f
How many static initializers can you have ? As many as you want, but the static initializers and class variable initializers are implemented in textual order and may not refer
Explain Overriding Methods: The Solution The object oriented solution to this problem is to describe a new class, call it SlowCar, that inherits from Car and imposes the additi
A Java package is a naming context for classes and interfaces. A package is used to make a separate name space for groups of classes and interfaces. Packages are also used to arran
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