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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 java.util.Random package? The java.util.Random class permits you to create objects which generates pseudo-random numbers along with uniform or gaussian distributions ac
How can we define a computer screen? A computer screen is define as use to display output of computer to the user. Computer screen is consists of pixels.
Your FaceBooklet application will use the classes you wrote for Program 3. Start by creating a copy of your Program 3 project with a new name (say, "Program4"). Note that you ca
Define Array ? Indexed collections of variable of similar data types or we can say a Set of organized variables of similar type.
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 :
In an external JavaScript file write code that, upon form submission, scans the list of courses for a match (case should be insensitive). If a match is found, change the div's back
Why do we need wrapper classes? It is sometimes simpler to deal with primitives as objects. Moreover most of the collection classes keep objects and not primitive data types. A
I want cyclos mobile banking USSD and IVR module Project Description: We already have a Cyclos mobile banking project deployed on our server with SMS banking module. The s
What is White Space? explain proper use of white space in java? White space consists mainly of the space character in which you generates through hitting the space bar on your
A Mexican restaurant in London is struggling with preparing the meal ordered by it;s customer in time and has started loosing it;s business. The owner is looking at the possibility
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