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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 happens to the static fields of a class during serialization? There are three exceptions in which serialization does not necessarily read and write to the stream. These
Explain the term- Strings A string is generally considered to be a sequence of characters stored in memory and accessible as a unit. Strings in java are signified as objects
Describe Exception Handling in JAVA
Errors: When a dynamic linking failure or some other "hard" failure in the virtual machine happens, the virtual machine gives an Error. Typical Java programs could not find Error
Question: (a) State and explain clearly FIVE new features of Actionscript 3.0 as compared to Actionscript 2.0. (b) Explain clearly the concept of events and events listen
1. Create a text file (you can name it sales.txt) that contains in each line the daily sales of a company for a whole month. Then write a Java application that: a. asks the user fo
To integrate your Struts application with Spring, we have two options: ? Configure Spring to manage your Actions as beans, using the ContextLoaderPlugin, and set their dependenc
Write a java program that computes the scores of 10 students in the following units; 1.Java 2.PHP 3.Python 4.C++ 5.Perl Generate a transcript.
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.
How to Begin Java
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