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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."); }
}
A Java package is a naming context for classes and interfaces. A package is used to make a separate name space for groups of classes and interfaces. Packages are also used to arran
How memory allocated for a object
Modify your UserProfile class to meet the following requirements: It must include a field called wall to store an ArrayList of wall posting objects. It must also provide
What is a multicast delegate? Every delegate object holds reference to a single method. Though, it is possible for a delegate object to hold references of and invoke multiple m
What is the difference among microprocessors and microcontrollers? Give one example of both? The microprocessor is electronic equipment that can perform various functions and a
how android applications are made using java.?
Explain Testing Objects for Equality in java? , = can only be used with numbers and characters. They cannot be used with Strings, booleans, arrays or other compound types sin
How can you define a consistent web design? Why is it needed? A consistent web design should be the one in which achieves the result in which it was designed for, which result
Relate Java with C/C++ Very similar C/C++ syntax, operators, etc. Core language is simpler than C++ -- no pointers, no operator overloading, and no multiple inheritance.
Java Programming 1. Discuss any five buzz words in Java. 2. Describe exception classes and also explain common exceptions in java. 3. Describe primitive and abstract data
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