Interested to Buy Any Domain ? << Click Here >> for more details...
can you create interface instance ?
- 54 Answers
- 78572 Views
- Fidelity, TCS, I also Faced
- E-Mail Answers
Answer Posted / guest
sdfg
| Is This Answer Correct ? | 35 Yes | 59 No |
Post New Answer View All Answers
How to overcome the exception object reference not set to an instance of object?
What do you understand by a Static Variable?
How do you do exponents in java?
What do you understand by the bean persistent property?
How does the garbage collector works in java?
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)
Can one thread block the other thread?
What are the steps in the jdbc connection?
What is the difference between Array and Hash Table?
What is "this" keyword in java? Explain
Can you pass by reference in java?
What are the differences between heap and stack memory in java?
What is the functionability stubs and skeletons?
Define a package.
What string is utf8?
