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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."); }
}
Give an Examples of Access Protection ? This is how the Car class would almost certainly be written in practice. Remember that all the fields are now declared private, and the
What do mean by synchronized methods and synchronized statements ?
Name the common bugs which are not possible in java Many common bugs and security problems (such as "buffer overflow") are not possible in java. Checks also make it easier to f
An Action Class performs a role of an adapter among the contents of an incoming HTTP request and the corresponding business logic that should be implemented to process this request
PACKAGE
do you have example of a simple midlet game ?
Authentication is basically an identification step. Functionality used for J2EE security: Principal : An entity that may be authenticated and identified. Principal n
Explain term Literals in java? Literals are pieces of Java source code which mean exactly what they say. For example "Hello World!" is a String literal and its meaning is the w
Im not in the line of computer science.But i would like to have some knowledge about the computer language "JAVA".I aldredy learns the computer languages "C,C++".So kindly help me
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