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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."); }
}
Difference between HashMap and Hash table HashMap: It allow us to have null values and also one null key It is Unsynchronized. Iterator in HashMap is Fail-Safe.
A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''''a''''-''''z'''') and
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
When should I use abstract classes and when should I use interfaces? Use Interface, when: Design changing often or when various implementations only share method sign
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Differentiate between SMTP and POP3 server? SMTP (Simple Mail Transfer Protocol) is a protocol used to send and receive eMail messages over a TCP/IP network. While POP3 (Post
Task 1 Create a new project in Eclipse called Assignment 1. Within this project create a package called task01. 1/ Download the class Date (you must use this class - no
can i have code on this assignment: The code in the main method should do the following: 1. Prompt the user for a string input value for the amount in dollars and store it in a va
Explain how several ways businesses monitor their employees? Systems are available in which monitor or most every key stroke which an employee forms on computer. Systems are av
Normal 0 false false false EN-US X-NONE X-NONE
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