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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."); }
}
Describe the concept of Encapsulation Encapsulation is a technique which is used for hiding properties and behaviors of an object and allowing outside access only as appropria
How we can changing the Implementation ? Suppose the Car class requires to be used in a simulation of New York City traffic in that each actual car on the street is represente
Assistance for JSON authentication problem RSS/AOL/Android The key problem we face is how to authenticate afterward the user logged in the webview as well as then parse the JSON
Question A What are the difference between an interface and an abstract class? Question B Describe Exception Handling in JAVA Question C Describe the following with resp
How to get all the registered objects in a rmiregistry? Ans) Using list method of Naming Class.
There is no separate homework this week, but you may complete the exercises ahead of time, in which case you only need to attend for long enough to get your work marked off by your
The series of steps followed by an application is known its life cycle. A JSF application typically follows six steps in its life. 1. Restore view phase 2. Apply request valu
What is the Data Normalization? Also define its goal. Data normalization is to sort out complex data within easy form. It uses to simplify the complex information to form it mo
Which models are supported by JMS? Please, explain them. Ans) Publish or subscribe (pub/sub). This model permits a client (publisher) to send messages to a JMS topic. These mess
Implement the Money class discussed in class. This class should represent a dollar and cents amount with 0-99 cents and the cents being the same sign as the dollars. The class shou
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