Explain try and catch exception in java, JAVA Programming

Assignment Help:

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-catch
try-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.");
}

}


Related Discussions:- Explain try and catch exception in java

Display array elements by using for-each loop, Need assignment help , on th...

Need assignment help , on the topic “Demonstrate a console-program” Demonstrate a console-program to create an array of integers and Initialize the array and assign the values i

What is the order of function invocation in an applet? , The Applet's life ...

The Applet's life cycle functions are as follows: public void init() : Initialization function called only once by the browser. public void start() : Method called after

What is the use of throws keyword, What is the use of throws keyword ? ...

What is the use of throws keyword ? Rather than explicitly catching an exception you can declare in which your method throws the exception. This passes the repsonsibility to h

Session scope and Request scope, What is the difference among session scope...

What is the difference among session scope and request scope when saving formbean? Ans) When the scope is request, the values of formbean would be there for the current request.

Developing a prototype system in php and javascript, General Overview A...

General Overview A number of organisations are using micro-blogging as a cost-effective way of communicating with customers, building online communities and releasing informati

Socket in java networking and rmi, What Is a Socket in Java Networking and ...

What Is a Socket in Java Networking and RMI? Ans) A socket is one end-point of a two-way communication link among two programs running on the network. A socket is bound to a por

Posting on a wall, Viewing a User's Wall Where your project allows you t...

Viewing a User's Wall Where your project allows you to view a user's profile, your ZHTML must provide the following capabilities: 1. Provide a Wall for that user profile, dis

Why do we need wrapper classes, Why do we need wrapper classes? It is s...

Why do we need wrapper classes? It is sometimes simpler to deal with primitives as objects. Moreover most of the collection classes keep objects and not primitive data types. A

What is runnable jar archives, What is Runnable JAR archives You can ru...

What is Runnable JAR archives You can run a program stored within the JAR archive that has a main() method like this: $ java -cp eharold.jar MainClassName You must use the f

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd