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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."); }
}
Explain data entry issues? DATA ENTRY: There is new data entered every day. New customers are added every day. Some of the data entry needs the manual entry within computer s
JavaScript is an extremely powerful object-based (or prototype-based) language. It is not a full-blown OOP (Object-Oriented Programming) language, like Java, however it is an objec
(CarbonFootprint Interface: Polymorphism) Using interfaces, as you learned in this chapter, you can specify similar behaviors for possibly disparate classes. Governments and compan
Describe Member Variables vs. Local Variables ? class Car { String licensePlate = ""; // member variable double speed; = 0.0; // member variable double maxSp
how do this program?
codes and output on how to make multiple choices quiz
What is Multiple Inheritance ? A few object oriented languages, notably C++, permits a class to inherit from more than one unrelated class. This is known as multiple inheritanc
Explain Code and Document Bases ? If you don't know the exact URL of the image, but you do know its name and in which it's in the similar directory as the applet, you can use
The Local Systems IP Address and Port Number and the Remote System's IPAddress and Port Number.
Write code in JavaScript language to show the odd numbers among 20 to 100 using FOR statement. Note: No requirement to write whole HTML program. Just JavaScript code of need p
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