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What is an Exceptions ?
• What is an exception? • try-catch • finally • The different kinds of exceptions • Multiple catch clauses • The throws clause • Throwing exceptions • Writing your own exception classes
What is an Exception?Consider this program: public class HelloThere {
public static void main(String[] args) { System.out.println("Hello " + args[0]); }
}Suppose it's run like this: $ java HelloThereRemember that's there's no args[0]. Here's what you get:$ java HelloTherejava.lang.ArrayIndexOutOfBoundsException: 0 at HelloThere.main(HelloThere.java:5)This is not a crash. The virtual machine exits generally. All memory is cleaned up. All resources are released.
2. Problem Description: A Java program needs to be written to display the result of following operations based input character. The table for input character with operations is : I
What is an abstract class? Abstract class must be extended/subclassed (to be useful). It serves as a template. A class that is abstract may not be instantiated (ie. you may not
Asynchronous control
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
Project Description: I'm using a php script called phpfox on my site its work as social network . So I need is to use this script as CMS for my application. What users wil
On the surface, an application context is similar as a bean factory. But application context offers much more.. ? Application contexts give a means for resolving text messages,
Your task is to design a scheduler for the Sheridan Rail Corporation which keeps track of all daily scheduled trips for the railway. Users can add new trips as well as perform sea
When wiring beans, if a bean element is embedded to a property tag directly, then that bean is said to the Inner Bean. The disadvantage of this bean is that it cannot be reused any
Determine how many arguments were passed using length property In java, array knows their size by using the length property. By using, length property we can determine how many
What is Operator Overloading? A few object oriented languages, notably C++, permit you to not only overload techniques but also operators like + or -. This is very menaingful w
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