What is a method ?
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Answer / keerthi
Methods are the functions which describe the behaviour of an object
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Answer / thennavan.m
Entity /Identifier that has reference that state of behavior.
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Answer / praveen
A method is set of properties or behaviour of Datamember
and colletion of operations of perticuler class
methods are two types istance and static
we can call the methods directly with using static keyword
in static methods
we can call the instance methods by using creating of
object of the class
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Answer / j.venkatesan
A function is block of code.
Purpose:
* it is mainly used to reduce the size of the program.
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Answer / ravikiran(aptech mumbai)
A method is used to write the functionality with in a class
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Answer / janet
Methods are functions that operate on instances of classes
in which they are defined.Objects can communicate with each
other using methods and can call methods in other
classes.Method definition has four parts. They are name of
the method,type of object or primitive type the method
returns,a list of parameters and the body of the method. A
method's signature is a combination of the first three
parts mentioned above.
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What is class forname?
when a servlet sends request for first time it uses the follwing methods a)init b)doget() c)dopost() d)service
What is the method to declare member of a class static?
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The following program reads data (details of students) from a file named students.txt and converts it into e-mail addresses. The results are written to a file named studentemail.txt. students.txt consists of a number of lines, each containing the data of a student in colon delimited format: Last Name:First Name:Student Number Each input record is converted to an e-mail address and written to studentemail.txt in the following format: the first character of the last name + the first character of the first name + the last four digits of the student number + “@myunisa.ac.za” import java.io.*; public class EmailConverter { public static void main(String[] args) throws IOException { BufferedReader input = new BufferedReader(new FileReader ("students.txt")); PrintWriter output = new PrintWriter(new FileWriter ("studentemail.txt")); String line = input.readLine(); while (line != null) { // Extract the information for each student String[] items = line.split(":"); // Generate the email address String email = "" + items[0].charAt(0) + items[1].charAt(0) + items[2].substring(4,8) + "@myunisa.ac.za"; email = email.toLowerCase(); // Output output.println(email); line = input.readLine(); } input.close(); output.close(); } } Rewrite the class so that it handles possible errors that may occur. In particular, it should do the following: • It should catch at least three appropriate exceptions that might occur, and display suitable messages. • At this stage, the program will not run correctly if there is an empty line in the input file. Change the program so that if an empty line is encountered, an exception is thrown and the empty line is ignored. This exception should be handled with the display of a suitable error message. • Before the e-mail address is added to the output file, check if the student number has 8 digits. If not, throw an InvalidFormatException (which the program should not handle itself)
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