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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."); }
}
Describe Interfaces in java langauge? Interfaces are the further level of abstraction. An interface is like a class along with nothing but abstract methods and final, static fi
what is the jaob of it
I am having trouble with the code below because I am trying to call the text field input type so that whenever someone enters a number above 10 it responds with the alert shown bel
Explain java.lang.string library in java? Strings are objects. Specifically they're instances of the class java.lang.String . This class has several methods which are useful f
how to solve the equation of these operator
In Java not all classes must be described separate from each other. You may put the definition of one class under the definition of another class. The class inside class is called
What restrictions are placed on method overriding? Overridden methods must have the similar name, argument list, and return type. The overriding method may not limit the access
#questionSmugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they
JSP simply gives a Page which may contain markup, embedded Java code, and tags which encapsulate more complicated logic / html. JSF may use JSP as its template, but gives much more
write a java program implementing multithreading concept in hotel management
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