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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."); }
}
What is Setter Methods explain with an example? Setter methods, also called as mutator methods, merely set the value of a field to a value specified through the argument to the
While you declare a variable in a function, the variable can be accessed within that function only. While you exit the function, the variable is destroyed. These variables are ca
Prompt the user for an int between an upper and lower boundary. Reuse the validateInput() method from project 2 to validate if the input is in bounds. If it is not, print an error
What is the use of Wrapper class You can create an object of Wrapper class using a String or a primitive data type Integer num = new Integer (4); or Integer num = n
Why do we call JavaScript an Object-based Language? In java language an JavaScript shares several similarities with object-oriented languages, and thus is known as an object-ba
Consider the following C++ template class. #include using namespace std; template class SortedList { public: SortedList() {size = 0;} void insert(T item); friend ostrea
What are parallel arrays?
What is constructor chaining and how is it achieved in Java? A child object constructor always first requires to construct its parent (which in turn calls its parent constructo
Project Description: I want to build a camera application for android. By default android will add metadata for the image, for e.g. Date, time, resolution, gps tag etc..In this
Explain Data Updates issues in data management? DATA UPDATES: Old titles must be removed regularly Data changes every time Prices change Transportation / shipping cost change
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