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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."); }
}
Problem 1 A savings account object holds a non-negative balance, and provides deposit(k ) and withdraw(k ) methods, where deposit(k ) adds k to the balance, and withdraw(k ) subtra
Model-View-Controller (MVC) is a design pattern put together to help control change. MVC decouples interface from business logic and data. ? Model: The model having the core of
Using the above thread program, now create 20 threads in your program and run them. No need to wait for the keyboard in each thread, just print "Hello" and its thread id in each t
Advantages offered by SOA Splits down the silos of data, functionalities, and applications into enterprise services. Adapts an application to changing business requirements
Write a program that reads both the girl and boy files into memory using arrays. Then, allow the user to input a name. The program should search through both arrays. If there is
What are wrapper classes? Java gives specialized classes corresponding to every of the primitive data types. These are known as wrapper classes. They are example: Integer, C
I just finished a small tutorial on JSP and servlet now I was looking for some assignments so that I can try my hands on
Project Description: A java application is required with the subsequent features 1. Ability to use GSM Modem (and/or Mobile phones) or SMPP to send and receive SMS messages
I send you these files in order to make clear image about my task that I want you to design for me an application for PC that used to control robot arm via micro controller PIC18.
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