Can anyone suggest me how to learn Computational Fluid Dynamics? (I am just a beginner.)

807

What are the defects in exhaust valve?

671

where is the cache (lookup, index) created and how can you see it.

810

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)

666

what is the method for seperation of periplasmic proteins ?

780

why context switching time should be minimum? How it depends on hardware support?

438

how the compound separate in coulunm,explain

915

Prepare a Schedule for a Highrised building from starting stage to Handover?

441

Can you use the Naming Service with the version of VisiBroker that comes with Delphi 5 Enterprise?

784

What is reconcile Adjustment Account in SAP Business One

1606

What is Petri nets?

318

How does PLC work for sychronising of Two or more DG sets?

699

why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?

684

What is the purpose of stern tube?

754

In Selenium how a test suit is run and report is generated.

1195